TITLE 12. HEALTH

STATE BOARD OF HEALTH

Final Regulation

Title of Regulation: 12VAC5-630. Private Well Regulations (amending 12VAC5-630-10, 12VAC5-630-20, 12VAC5-630-30, 12VAC5-630-50 through 12VAC5-630-120, 12VAC5-630-140 through 12VAC5-630-330, 12VAC5-630-350, 12VAC5-630-360, 12VAC5-630-380 through 12VAC5-630-430, 12VAC5-630-450, 12VAC5-630-460; adding 12VAC5-630-331, 12VAC5-630-431; repealing 12VAC5-630-40, 12VAC5-630-370, 12VAC5-630-440, 12VAC5-630-470, 12VAC5-630-480).

Statutory Authority: §§ 32.1-12 and 32.1-176 of the Code of Virginia.

Effective Date: November 6, 2024.

Agency Contact: Lance Gregory, Director, Division of Onsite Sewage and Water Services, Department of Health, 109 Governor Street, Richmond, VA 23219, telephone (804) 864-7491, FAX (804) 864-7475, or email lance.gregory@vdh.virginia.gov.

Summary:

The amendments include (i) revising and adding definitions for consistency with the Code of Virginia, other regulations related to private wells and groundwater resources, and current industry standards; (ii) revising administrative processes to reflect current law and to improve consistency with other department regulations, such as the Sewage Handling and Disposal Regulations (12VAC5-610), which establish minimum separation distance from private wells; (iii) clarifying grout materials; (iv) revising well abandonment protocols and the separation distance requirements between sources of contamination and abandoned wells; (v) making private well construction reporting requirements and well construction and reporting requirements in the Groundwater Withdrawal Regulations (9VAC25-610) consistent; (vi) removing references to obsolete or repealed regulations and statutes; (vii) revising construction standard exemptions for Class IIIC and Class IV wells; (viii) clarifying disinfection procedures and standards for yield and storage requirements; (ix) revising the Private Well Classification System so that Class IV well construction standards mirror Class III wells; (x) establishing a standard procedure for converting existing Class IV wells to Class III wells; (xi) creating reasonable exemptions to the regulations; (xii) clarifying regulatory authority over observation wells; (xiii) establishing minimum private well construction criteria based on geologic conditions, such as requiring a mechanical seal at the termination of well casing into bedrock; (xiv) requiring that all private well components meet national lead-free standards; (xv) establishing criteria to acknowledge nationally recognized standards and certifications for approval of private well components, including standard methods, materials, products, analytical, and permeability standards; (xvi) establishing a minimum separation distance from utilities, property lines, permanently abandoned onsite sewage systems, reuse water lines, and possible other sources of contamination; and (xvii) establishing quality standards for water used during well construction. No substantive changes have been made to the proposed regulation.

Summary of Public Comments and Agency's Response: A summary of comments made by the public and the agency's response may be obtained from the promulgating agency or viewed at the office of the Registrar of Regulations.

12VAC5-630-10. Definitions.

The following words and terms, when used in this chapter, shall have the following meanings unless the context clearly indicates otherwise.

"Abandoned well" means a private well whose from which the pump has been disconnected for reasons other than repair or replacement, or whose the use of which has been discontinued or which has been pronounced abandoned by the owner. A temporarily abandoned well is a well that is intended to be returned to service as a source of water at some future time. A permanently abandoned well is a well that is not intended to be used as a source of water at any future time. [ Abandoned ] wells must meet the [ well requirements ] of [ are found in 12VAC5-630-450. ]

"Agent" means a legally authorized representative of the owner.

"Agricultural operation" means an operation devoted to the bona fide production of crops, animals, or fowl, including the production of fruits and vegetables of all kinds; meat, dairy, and poultry products; nuts, tobacco, nursery and floral products; and the production and harvest of products from silviculture activity.

"Annular space" means the space between the well bore hole wall and the outside of a water well casing pipe, or between a casing pipe and a liner pipe.

"Aquifer" means a geologic formation, group of formations, or part of a formation, that transmits water has the capability to store and transmit water in sufficient quantity to constitute a usable supply source.

"Bedrock" means any solid rock underlying soil, sand, or clay the solid, potentially fractured and fissured rock formations that occur beneath soils, underlying sediment deposits, or weathered material.

"Beneficial use" means use of water that includes domestic, agricultural, commercial, industrial, and investigative purposes.

"Bioretention pond" means a best management practice structure engineered for the purpose of reducing the pollutant load in storm water runoff to surface water and groundwater systems.

"Biosolids" means solid, semisolid, or liquid materials removed from municipal sewage and treated to be suitable for recycling as fertilizer [ , as defined in 9VAC25-31-10 and 9VAC25-32-10. For the purpose of this chapter, biosolids do not include exceptional quality biosolids as that term is defined in 9VAC25-32-10 ].

"Board" means the State Board of Health.

"Bored well" means a well that is excavated by means of a soil auger (hand or power) as distinguished from a well [ which that ] is drilled, driven, dug, or jetted.

"Casing" means a hollow cylindrical device (typically steel, plastic, or concrete) that is installed in a well to maintain the well opening and to provide a seal.

"Clean fill" means any combination of undisturbed soil and natural earth material, commercially available quarried sand or gravel product, and cuttings from the well being constructed, provided that the materials do not contain contaminated media. In this context, undisturbed soil and natural earth materials refers to unconsolidated mineral and organic material on the immediate surface of the Earth that developed naturally on the property on which it originates.

"Closed-loop ground-source heat pump well" means a well consisting of a sealed loop of plastic pipe buried vertically beneath the earth's surface to allow heat transfer between the fluid in the pipe and the earth. Horizontal closed-loop ground source heat pump pipe configurations installed in trenches, including those which may intercept shallow groundwater, are excluded.

"Coliform" means a broad group of naturally occurring bacteria species found in soils and rocks. Coliform bacteria are more prevalent in near surface soils, and their presence in well water may indicate the possible presence of more harmful pathogens.

"Collapsing material" means any soil or gravel material which that collapses upon itself forming a seal with the casing and leaves no voids around the casing.

"Commercially dependent well" means a well that is the sole source of water for a commercial facility that requires the water from the well for continued operation. Examples include wells serving an ice plant, a car wash facility, or as irrigation for commercial nurseries, or agricultural wells that provide water for livestock or irrigation.

"Commissioner" means the State Health Commissioner, who is the chief executive officer of the board, a deputy commissioner, or his a subordinate who has been delegated powers in accordance with subdivision 2 of 12VAC5-630-90 B of this chapter.

"Confined aquifer" means an aquifer that is confined by an overlying impermeable formation.

"Consolidated rock" means a formation consisting entirely of a natural rock formation that contains no soil and does not collapse against the well casing.

"Construction dewatering" means the process of draining an excavated area that is flooded with rain water or groundwater before construction can start.

"Construction of wells" means acts necessary to locate and construct private wells, including the location of private wells, the boring, digging, drilling, or otherwise excavating of a well hole and the installation of casing with or without well screens, or well curbing.

"Contaminated media" means soil, sediment, dredged material, or debris that, as a result of a release or human use, has absorbed or adsorbed physical, chemical, or radiological substances at concentrations above those consistent with nearby or undisturbed soil or natural earth materials.

"Controlled low strength material" or "flowable fill" means a slurry comprised of cement, water, and fine aggregate or filler (including coal ash, foundry sand, quarry fines, and baghouse dust in any combination).

"Cuttings" means the solid material, saturated or unsaturated, removed from a borehole drilled by rotary, percussion, or auger methods.

"Deep well ejector pump system" means a well that utilizes a casing adapter and a deep well ejector. These wells must maintain a constant vacuum to operate.

"Dewatering well" means a driven well constructed for the sole purpose of lowering the water table and kept in operation for a period of 60 days or less. Dewatering wells are used to allow construction in areas where a high water table hinders or prohibits construction and are always temporary in nature.

"Department" means the Virginia Department of Health.

"Deputy commissioner" means a person who serves as a deputy commissioner in accordance with § 32.1-22 of the Code of Virginia.

"DEQ" means the Virginia Department of Environmental Quality.

"Disinfection" means the destruction of all a process that inactivates or destroys pathogenic organisms in water by use of a disinfectant.

"Division" means the Division of On-Site Sewage and Water Services, Environmental Engineering, and Marina Programs within the department.

"District health department" means a consolidation of local health departments as authorized in § 32.1-31 C of the Code of Virginia.

"DPOR" means the Virginia Department of Professional and Occupational Regulation.

"Drilled shallow well suction pump system" means a drilled well two inches or [ less smaller ] in diameter that utilizes an offset pump to draw water from the well through the casing. These wells must maintain a constant vacuum in order to operate.

"Drilled well" means a well that is excavated wholly or in part by means of a drill (either percussion or rotary) which that operates by cutting or abrasion.

"Driven well" means a well that is constructed by driving a pipe, at the end of which there is a drive point and screen, without the use of any a drilling, boring, or jetting device.

"Dug well" means a well that is excavated by means of picks, shovels, or other hand tools, or by means of a power shovel or other dredging or trenching machinery, as distinguished from a bored, drilled, driven, or jetted well.

"Emergency well replacement" means the replacement of an existing private drinking water well, heat pump well, or commercially dependent well that has failed to deliver the water needed for its intended use. Such The failure requires the drilling of a new well or extensive modifications to the existing well. The replacement of failed noncommercial irrigation wells, and other types of private wells are not considered emergencies.

"Gravel pack" means sand or gravel placed outside a well screen in a well to assist the flow of water into the well screen and to inhibit clogging of the screen.

"Ground water" "Groundwater" means any water, except capillary moisture, beneath the land surface in the zone of saturation or beneath the bed of any a stream, lake, reservoir or other body of surface water within the boundaries of this Commonwealth, whatever may be the subsurface geologic structure in which such the water stands, flows, percolates, or otherwise occurs.

"Groundwater management area" means a geographically defined groundwater area in which the State Water Control Board has deemed the levels, supply, or quality of groundwater to be adverse to public welfare, health, and safety pursuant to 9VAC25-600.

"Grout" means any a stable, impervious bonding material, reasonably free of shrinkage, which that is capable of providing a watertight seal in the annular spaces of a water well throughout the depth required, to protect against the intrusion of objectionable matter.

"Human consumption" means drinking, food preparation, dishwashing, bathing, showering, hand washing, teeth brushing, and maintaining oral hygiene.

"Jetted well" means a well that is excavated using water pumped under pressure through a special washing point to create a water jet which that cuts, abrades, or erodes material to form the well.

"Lead free" means the following:

1. When used with respect to solders and flux, refers to solder and flux containing not more than 0.2% lead.

2. When used with respect to pipes, pipe fittings, plumbing fittings, and plumbing fixtures, refers to the weighted average of wetted surfaces of pipes, pipe fittings, plumbing fittings, and plumbing fixtures containing not more than 0.25% lead.

"Local health department" means the department established in each city and county in accordance with § 32.1-30 of the Code of Virginia.

"Noncollapsing material" means soil or gravel material which that can maintain an open well bore hole long enough to grout the annular space between a well and the well bore hole. For the purpose of this chapter, soil or gravel material which that collapsed upon itself but created voids around the casing is considered noncollapsing material.

"Nonpublic water" means pure water that is not provided by a waterworks.

"Observation well" or "monitoring well" means a well constructed to measure hydrogeologic parameters, such as the fluctuation of water levels, or for scientific monitoring of the quality of ground water groundwater, or for both purposes.

"Owner" means any person, who owns, leases, the Commonwealth or any of its political subdivisions, including sanitary districts, sanitation district commissions and authorities, an individual, a group of individuals acting individually or as a group, a public or private institution, corporation, company, partnership, firm, or association that owns or proposes to own or lease a private well.

"Person" means any and all persons, including individuals, firms, partnerships, associations, public or private institutions, municipalities or political subdivisions, governmental agencies, or private or public corporations organized under the law of this Commonwealth or any other state or country an individual, corporation, partnership, association, or any other legal entity.

"Pollutant" means substances, including solid waste, sewage, effluent, radioactive materials, petroleum products, manufactured chemical products, and industrial byproducts, that can detrimentally affect the quality of water.

"Private well" means any a water well constructed for a person on land which that is owned or leased by that person and is usually intended for household, ground water groundwater source heat pump, agricultural use, industrial use, or other nonpublic water well.

"Pure water" means water of a quality suitable for human consumption that is (i) sanitary and normally free of minerals, organic substances, and toxic agents in excess of reasonable amounts and (ii) adequate in quantity and quality for the minimum health requirements of the persons served.

"Reclaimed water" means treated wastewater that can be used for beneficial purposes, determined by the degree of treatment achieved.

"Remediation well" means an observation or monitoring well in use for recovery or treatment of one or more pollutants.

"Replacement well" means a well being constructed to take the place of an existing well that is being taken out of service and is being abandoned.

"Sanitary survey" means an investigation of any condition that may affect public health obvious sources of potentially toxic or dangerous substances within 200 feet of a proposed private well.

"Screen" means the intake section of a well casing that obtains water from an unconsolidated aquifer providing for the water to flow freely and adding structural support to the bore hole. Screens are used to increase well yield or prevent the entry of sediment, or both.

"Sewage" means water carried and nonwater carried human excrement, kitchen, laundry, shower, bath, or lavatory wastes separately or together with such underground, surface, storm and other water and liquid industrial wastes as may be present from residences, buildings, vehicles, industrial establishments, or other places.

"Sewage disposal system" means a sewerage system or treatment works designed not to result in a point source discharge.

"Sewer" means any sanitary or combined sewer a pipe or conduit used to convey sewage or municipal or industrial wastes waste streams.

"Sewerage system" means pipelines or conduits, pumping stations and force mains, and all other construction, devices, and appliances appurtenant thereto, used for the collection and conveyance of sewage to a treatment works or point of ultimate disposal.

"Subsurface soil absorption" means a process which that utilizes the soil to treat and dispose of sewage effluent.

"Treatment works" means any a device or system used in the storage, treatment, disposal, or reclamation of sewage or combinations of sewage and industrial wastes, including but not limited to pumping, power, and other equipment and appurtenances, septic tanks, and any works, including land, that are or will be (i) an integral part of the treatment process or (ii) used for the ultimate disposal of residues or effluents resulting from such the treatment.

"Tremie pipe" means a tube through which grout, filter media, or other flowing material is placed by gravity feed or pumping. The pipe is placed at the lowermost part of the well feature being treated (inner casing or annular space), and the bottom of the pipe remains submerged in the material being placed as the pipe is raised in order to prevent uneven distribution or bridging.

"Variance" means a conditional waiver of a specific regulation which that is granted to a specific owner relating to a specific situation or facility and may be for a specified time period.

"Water quality" means the chemical, physical, bacteriological, and radiological characteristics of water with respect to its suitability for a particular purpose.

"Water table" means the uppermost surface of ground water groundwater saturation. The in an unconfined aquifer and the level in the saturated zone at which the pressure is equal to atmospheric pressure.

"Water well" or "well" means any an artificial opening or artificially altered natural opening, however made, by which ground water groundwater is sought or through which ground water groundwater flows under natural pressure or is intended to be artificially drawn; provided this definition shall not include wells drilled for the following purposes: (i) exploration or production of oil or gas, (ii) building foundation investigation and construction, (iii) elevator shafts, (iv) grounding of electrical apparatus, or (v) the modification or development of springs.

"Water well systems" means the water well to reach groundwater and the well pump and tank, including pipe and wire, up to and including the [ pint point ] of connection to plumbing and electrical systems.

"Water well systems provider" means the person certified by DPOR to provide the drilling, installation, maintenance, or repair of a water wells or water well systems.

"Waterworks" means a system that serves piped water for human consumption to at least 15 service connections or 25 or more individuals for at least 60 days out of the year. "Waterworks" includes all structures, equipment, and appurtenances used in the storage, treatment, and distribution of pure water except the piping and fixtures inside the building where the water is delivered.

"Well area" means an area designated on a construction permit as appropriate for the construction of a private well.

"Well bore" means a vertical hole advanced into the earth, however created, by a water well system provider, in which a well is constructed.

"Well site" means the location on the ground surface of a property designated on a construction permit for the construction of a private well.

"Work days" or "working days" means days on which the department, the district health department, or the local health department, as applicable in context, is open for business, excluding holidays and closures. [ " ]

"Yield" means the quantity of water, usually measured in volume of water per unit [ of ] time, which may flow or which may be pumped, from a well or well field.

12VAC5-630-20. Authority for regulations.

Title 32.1 of the Code of Virginia, and specifically §§ 32.1-12 and 32.1-176.4 32.1-176.2 of the Code of Virginia, provide that the State Board of Health board has the duty to protect the public health and to ensure that ground water groundwater resources are not adversely affected by the construction and location of private wells. In order to discharge this duty, the board is empowered, pursuant to §§ 32.1-12 and 32.1-176.4 of the Code of Virginia, to supervise and regulate the construction and location of private wells within the Commonwealth.

12VAC5-630-30. Purpose and applicability of regulations.

These regulations have A. Purpose. This chapter has been promulgated by the State Board of Health board to:

1. Ensure that all private wells are located, constructed, and maintained in a manner which that does not adversely affect ground water groundwater resources, or the public welfare, safety, and health;

2. Guide the State Health Commissioner commissioner in his determination of determining whether a permit for construction of a private well should be issued or denied;

3. Guide the owner or his the owner's agent in the requirements necessary to secure a permit for construction of a private well; and

4. Guide the owner or his the owner's agent in the requirements necessary to secure an inspection statement following construction; and

5. Guide the owner or the owner's agent in the requirements necessary to abandon a private well (temporarily or permanently) when the well is not in use.

B. Applicability. This chapter applies to owners of a private well. The following wells are excluded from the requirements of this chapter:

1. Wells constructed as a groundwater source for a waterworks as regulated by 12VAC5-590.

2. Wells constructed for the purpose of building, roadway, or other geotechnical foundation investigation, design, or construction, provided that the well, including an unimproved well bore, is abandoned in such a manner as to prevent it from being a channel of vertical movement of surface water or a source of contamination into the ground.

3. Wells constructed for the purpose of an elevator shaft.

4. Wells constructed for the purpose of constructing an extensometer or similar scientific instrument.

5. Wells constructed for the purpose of grounding of electrical apparatus.

6. Wells constructed for the purpose of the modification or development of springs.

7. Wells constructed for the purpose of underground injection as regulated by 40 CFR Part 144.

8. Wells constructed for the purpose of the observation or monitoring of groundwater elevation or quality, except as governed by 12VAC5-630-420 B and C.

9. Well bores, including direct push well bores and hand tool made well bores, advanced for the purpose of collecting soil or groundwater samples for analysis with or without temporary installation of casing or screen, provided that the well bore is abandoned after the sample is collected in such a manner as to prevent it from being a channel of vertical movement of surface water or a source of contamination into groundwater.

10. Wells constructed for the purpose of construction dewatering, provided that the well is abandoned within 60 days of construction by the removal of the well point, well casing, screening, and other appurtenances associated with the construction and operation of the well and completion of abandonment in such a manner as to prevent it from being a channel of vertical movement of surface water or a source of contamination into groundwater.

11. Wells constructed to provide cathodic protection, provided that the well is abandoned after use in such a manner as to prevent it from being a channel of vertical movement of surface water or a source of contamination into groundwater.

12VAC5-630-40. Relationship to Virginia Sewage Handling and Disposal Regulations. (Repealed.)

This chapter supersedes 12VAC5-610-1150 of the Virginia Sewage Handling and Disposal Regulations, and 12VAC5-610-1140 B and C of the Virginia Sewage Handling and Disposal Regulations which address private wells, and were adopted by the State Board of Health pursuant to Title 32.1 of the Code of Virginia.

12VAC5-630-50. Relationship to the State Water Control Board.

This chapter is independent of all regulations promulgated by the State Water Control Board. Ground water Groundwater users located in a ground water groundwater management area may be required to obtain a permit from the State Water Control Board in addition to obtaining a permit from the Department of Health. In addition to the reporting requirements contained in this chapter, § 62.1-258 of the Code of Virginia requires that private wells constructed in a groundwater management area be registered by the water well systems provider with the State Water Control Board within 30 days of the completion of construction. Private wells constructed in groundwater management areas are subject to 9VAC25-610.

12VAC5-630-60. Relationship to the Department of Environmental Quality, Waste Management Division.

This chapter establishes minimum standards for the protection of public health and ground water groundwater resources. Observation wells, monitoring wells, and remediation wells constructed under the supervision of the Virginia Department of Environmental Quality, Waste Management Division, DEQ are governed by 12VAC5-630-420.

12VAC5-630-70. Relationship to the Uniform Statewide Building Code.

This chapter is independent of and in addition to the requirements of the Uniform Statewide Building Code (13VAC5-63). All persons Persons required to obtain a well permit by this chapter shall furnish a copy of the permit to the local building official, upon request, when making application for a building permit. Prior to obtaining an occupancy permit, an applicant shall furnish the local building official with a copy of the inspection statement demonstrating the water supply has been inspected, sampled and tested (when applicable), and approved by the district or local health department.

12VAC5-630-80. Relationship to the Department of Professional and Occupational Regulation.

In Persons engaged in the construction, repair, or alteration of a private well shall be licensed and certified in accordance with § 54.1-1100 §§ 54.1-1103 and 54.1-1129.1 of the Code of Virginia, any contractor constructing a water well to reach ground water shall possess, as a minimum, a valid Class B contractors license.

12VAC5-630-90. Administration of regulations.

This chapter is administered by the following:

A. 1. The State Board of Health, hereinafter referred to as the board, board has the responsibility to promulgate, amend, and repeal regulations necessary to ensure the proper location, construction and location, repair, and abandonment of private wells.

B. 2. The State Health Commissioner, hereinafter referred to as the commissioner, is the chief executive officer of the State Department of Health department. The commissioner has the authority to act, within the scope of regulations promulgated by the board, and for the board when it is not in session. The commissioner may delegate his powers under this chapter in writing to any a subordinate, with the exception of (i) his; however, the power to (i) issue variances under § 32.1-12 of the Code of Virginia and 12VAC5-630-170, and (ii) his power to issue orders under § 32.1-26 of the Code of Virginia and 12VAC5-630-140 and 12VAC5-630-150 B and (iii) the power to revoke permits or inspection statements under 12VAC5-630-290, which may only not be delegated pursuant to § 32.1-22 of the Code of Virginia.

The commissioner has final authority to adjudicate contested case decisions of subordinates delegated powers under this section prior to appeal of such case decisions to the circuit court.

C. 3. The State Department of Health hereinafter referred to as department is designated as the primary agent of the commissioner for the purpose of administering this chapter.

D. 4. The district or local health departments are responsible for implementing and enforcing the regulatory activities required by this chapter.

12VAC5-630-100. Right of entry and inspections.

In accordance with the provisions of §§ § 32.1-25 and 32.1-12 and 32.1-176.6 of the Code of Virginia, the commissioner or his the commissioner's designee shall have the right to enter any property to ensure compliance with this chapter. In accordance with the provisions of § 32.1-176.6 of the Code of Virginia, the department has the authority to conduct such inspections as it may find reasonably necessary to ensure that the construction work conforms to applicable construction standards.

12VAC5-630-110. Compliance with the Administrative Process Act.

The provisions of the Virginia Administrative Process Act (§ 9-6.14:1 2.2-4000 et seq. of the Code of Virginia) shall govern the promulgation and administration of this chapter, including governing the procedures for rendering case decisions as defined in § 2.2-4001 of the Code of Virginia, and shall be applicable to the appeal of any a case decision based upon this chapter.

12VAC5-630-120. Powers and procedures of regulations not exclusive.

The commissioner may enforce this chapter through any means lawfully available.

12VAC5-630-140. Emergency order.

If an emergency exists, the commissioner may issue an emergency order as is necessary for preservation of public health, safety, and welfare or to protect ground water groundwater resources. The emergency order shall state the reasons and precise factual basis upon which the emergency order is issued. The emergency order shall state the time period for which it is effective. Emergency orders will be publicized in a manner deemed appropriate by the commissioner. The provisions of 12VAC5-630-150 C and D shall not apply to emergency orders issued pursuant to this section.

12VAC5-630-150. Enforcement of regulations.

A. Notice. Subject to the exceptions below in this section, whenever the commissioner or the district or local health department has reason to believe a violation of any of this chapter has occurred or is occurring, the alleged violator shall be notified. Such The notice shall be made in writing, shall be delivered personally or sent by certified mail, shall cite the regulation or regulations that are allegedly being violated, shall state the facts which that form the basis for believing the violation has occurred or is occurring, shall include a request for a specific action by the recipient by a specified time, and shall state the penalties associated with such violation. When the The commissioner deems may deem it necessary, he may to initiate criminal prosecution or seek civil relief through mandamus or, injunction, or other appropriate remedy prior to giving notice.

B. Orders. Pursuant to the authority granted in § 32.1-26 of the Code of Virginia, the commissioner may issue orders to require any an owner, or other person, to comply with the provisions of this chapter. The order shall be signed by the commissioner and may require:

1. The immediate cessation and correction of the violation;

2. Appropriate remedial action to ensure that the violation does not recur;

3. The submission to the commissioner for review and approval of a plan to prevent future violations to the commissioner for review and approval;

4. The submission of an application for a variance; or

5. Any other Other corrective action deemed necessary for proper compliance with the chapter.

C. Hearing before the issuance of an order. Before the issuance of an order described in 12VAC5-630-150 this section, a hearing must be held, with at least 30 days of notice by certified mail to the affected owner or other person of the time, place, and purpose thereof, for the purpose of adjudicating the alleged violation or violations of this chapter. The procedures at the hearing shall be in accordance with 12VAC5-630-180 A or B of this chapter and with §§ 9-6.14:11 through 9-6.14:14 of the Code of Virginia the Virginia Administrative Process Act (§ 2.2-4000 et seq. of the Code of Virginia).

D. Order; when effective. All orders Orders issued pursuant to 12VAC5-630-150 this section shall become effective not less than 15 days after mailing a copy thereof by certified mail to the last known address of the owner or person violating this chapter. Violation of an order is a Class 1 misdemeanor. See § 32.1-27 of the Code of Virginia.

E. Compliance with effective orders. The commissioner may enforce all orders. Should any owner or other person fail to comply with any order, the commissioner may:

1. Apply to an appropriate court for an injunction or other legal process to prevent or stop any practice in violation of the order;

2. Commence administrative proceedings to suspend or revoke the construction permit;

3. Request the Attorney General to bring an action for civil penalty, injunction, or other appropriate remedy; or

4. Request the Commonwealth's Attorney to bring a criminal action.

F. Not exclusive means of enforcement. Nothing contained in 12VAC5-630-140 or 12VAC5-630-150 this section shall be interpreted to require the commissioner to issue an order prior to commencing administrative proceedings or seeking enforcement of any regulations or statute through an injunction, mandamus, other appropriate remedy, or criminal prosecution.

12VAC5-630-160. Suspension of regulations during disasters.

If in the case of a man-made or natural disaster, the commissioner finds that certain regulations cannot be complied with and that the public health is better served by not fully complying with this chapter, he the commissioner may authorize the suspension of the application of the chapter for specifically affected localities and institute a provisional regulatory plan until the disaster is abated.

12VAC5-630-170. Variances.

Only the A. The commissioner or the deputy commissioners may grant a variance to this chapter. (See §§ 32.1-12 and 32.1-22 of the Code of Virginia and 12VAC5-630-90 B.) The commissioner or the deputy commissioners shall follow the appropriate procedures set forth in this subsection section in granting a variance.

A. B. Requirements for a variance. The commissioner may grant a variance if a thorough investigation reveals that the hardship imposed by this chapter (may be economic) outweighs the benefits that may be received by the public. Further, and that the granting of such a variance shall not subject the public to unreasonable health risks or jeopardize ground water groundwater resources.

Exception: The commissioner shall not grant a variance for an improperly located Class IV well that was located pursuant to an express Class IV permit, as described under 12VAC5-630-260 and 12VAC5-630-270, if the improper location of the well is a result of the failure by the owner, his the owner's agent, or the well driller water well systems provider to provide complete or accurate information on the site plan submitted with the application or to install the well in accordance with the permit.

B. C. Application for a variance. Any owner who seeks a variance shall apply in writing within the time period specified in 12VAC5-630-210 B. The application shall be signed by the owner, addressed, and sent to the commissioner at the State Department of Health in Richmond. The application shall include:

1. A citation to the section from which a variance is requested;

2. The nature and duration of the variance requested;

3. Any relevant analytical results, including results of relevant tests conducted pursuant to the requirements of this chapter;

4. The hardship imposed by the specific requirement of this chapter;

5. Statements or evidence why the public health and welfare as well as the ground water groundwater resources would not be degraded if the variance were granted;

5. 6. Suggested conditions that might be imposed on the granting of a variance that would limit the detrimental impact on the public health and welfare or ground water groundwater resources;

6. 7. Other information, if any, believed pertinent by the applicant; and

7. Such other 8. Other information as that the district or local health department or commissioner may require.

C. D. Evaluation of a variance application.

1. The commissioner shall act on any a variance request submitted pursuant to 12VAC5-630-170 B subsection C of this section within 60 calendar days of receipt of the request.

2. In the evaluation of a variance application, the commissioner shall consider the following factors:

a. The effect that such a the variance would have on the construction, location, or operation of the private well;

b. The cost and other economic considerations imposed by this requirement;

c. The effect that such a the variance would have on protection of the public health;

d. The effect that such a the variance would have on protection of ground water groundwater resources;

e. Relevant analytical results, including results of tests conducted pursuant to the requirements of this chapter;

f. The hardship imposed by enforcing the specific requirements of this chapter;

g. Suggested conditions that might be imposed on the granting of a variance that would limit detrimental impact on the public health and welfare;

h. Other information, if any, believed pertinent by the applicant; and

e. Such other i. Other factors as the commissioner may deem appropriate.

D. E. Disposition of a variance request.

1. The commissioner may deny any an application for a variance by sending a denial notice to the applicant by certified mail. The notice shall be in writing and shall state the reasons for the denial.

2. If the commissioner proposes to grant a variance request submitted pursuant to 12VAC5-630-170 B subsection C of this section, the applicant shall be notified in writing of this decision. Such The notice shall identify the variance, any conditions to the variance, and private well covered, and shall specify the period of time for which the variance will be effective. The effective date of a variance shall be as stated in the variance.

3. No owner may challenge the terms or conditions set forth in the variance after 30 calendar days have elapsed from the effective date of the variance.

E. F. Posting of variances. All variances Variances granted to any private wells are transferable from owner to owner unless otherwise stated, but not transferable to another private well. Each The variance shall be attached to the permit to which it is granted. Each The variance is revoked when the permit to which it is attached is revoked.

F. G. Hearings on disposition of variances. Subject to the time limitations specified in 12VAC5-630-210, hearings on denials of an application for a variance or on challenges to the terms and conditions of a granted variance may be held pursuant to subdivision 1 or 2 of 12VAC5-630-180 A or B, except that informal hearings under subdivision 1 of 12VAC5-630-180 A shall be held by the commissioner or his the commissioner's designee.

12VAC5-630-180. Hearing types.

Hearings before the commissioner or the commissioner's designees shall include any of the following forms depending on the nature of the controversy and the interests of the parties involved.

A. 1. Informal hearings. An informal hearing is a meeting with a district or local health department with the district or local health director presiding and held in conformance with § 9-6.14:11 § 2.2-4019 of the Code of Virginia. The district or local health department director shall consider all evidence presented at the meeting which that is relevant to the issue in controversy. Presentation of evidence, however, is entirely voluntary. The district or local health department shall have no subpoena power. No verbatim record need be taken at the informal hearing. The local or district health director shall review the facts presented and based on those facts render a decision. A written copy of the decision and the basis for the decision shall be sent to the appellant within 15 work days of the hearing, unless the parties mutually agree to a later date in order to allow the department to evaluate additional evidence. If the decision is adverse to the interests of the appellant, an aggrieved appellant may request an adjudicatory hearing pursuant to 12VAC5-630-180 B below subdivision 2 of this section.

B. 2. Adjudicatory hearing. The adjudicatory hearing is a formal, public adjudicatory proceeding before the commissioner, or a designated hearing officer, and held in conformance with § 9-6.14:12 conducted pursuant to § 2.2-4020 of the Code of Virginia. An adjudicatory hearing includes the following features:

1. Notice. Notice which states the time and place and the issues involved in the prospective hearing shall be sent to the owner or other person who is the subject of the hearing. Notice shall be sent by certified mail at least 15 calendar days before the hearing is to take place.

2. Record. A record of the hearing shall be made by a court reporter. A copy of the transcript of the hearing, if transcribed, will be provided within a reasonable time to any person upon written request and payment of the cost.

3. Evidence. All interested parties may attend the hearing and submit oral and documentary evidence and rebuttal proofs, expert or otherwise, that are material and relevant to the issues in controversy. The admissibility of evidence shall be determined in accordance with § 9-6.14:12 of the Code of Virginia.

4. Counsel. All parties may be accompanied by and represented by counsel and are entitled to conduct such cross examination as may elicit a full and fair disclosure of the facts.

5. Subpoena. Pursuant to § 9-6.14:13 of the Code of Virginia, the commissioner or hearing officer may issue subpoenas on behalf of himself or any person or owner for the attendance of witnesses and the production of books, papers or maps. Failure to appear or to testify or to produce documents without adequate excuse may be reported by the commissioner to the appropriate circuit court for enforcement.

6. Judgment and final order. The commissioner may shall designate a hearing officer or subordinate to conduct the hearing as provided in § 9-6.14:12 § 2.2-4024 of the Code of Virginia, and to make written recommended findings of fact and conclusions of law to be submitted for review and final decision by the commissioner. The final decision of the commissioner shall be reduced to writing and will contain the explicit findings of fact upon which his the decision is based. Certified copies of the decision shall be delivered to the owner affected by it. Notice of a decision will be served upon the parties and become a part of the record. Service may be by personal service or certified mail return receipt requested.

12VAC5-630-190. Request for hearing.

A request for an informal hearing shall be made by sending the request in writing to the district or local health department. A request for an adjudicatory hearing shall be made in writing and directed to the commissioner at the State Department of Health in Richmond. Requests for hearings shall cite the reason(s) reason for the hearing request and shall cite the section(s) any section of this chapter involved.

12VAC5-630-200. Hearing as a matter of right.

Any An owner or other person whose rights, duties, or privileges have been, or may be affected by any a decision of the board or its subordinates in the administration of this chapter shall have a right to both informal and adjudicatory hearings. The commissioner may require participation in an informal hearing before granting the request for a full adjudicatory hearing. Exception: No person other than an owner shall have the right to an adjudicatory hearing to challenge the issuance of either a construction permit or inspection statement unless the person can demonstrate at an informal hearing that the minimum standards contained in this chapter have not been applied and that he the person will be injured in some manner by the issuance of the permit or that ground water groundwater resources will be damaged by the issuance of the permit.

12VAC5-630-210. Appeals.

Any An appeal from a denial, revocation, or voidance of a construction permit, inspection statement, or request for variance for a private well must be made in writing and received by the department within 60 30 days of the date of the denial, revocation, or voidance.

A. Any request for hearing on the denial of an application for a variance pursuant to 12VAC5-630-170 D 1 must be made in writing and received within 60 days of receipt of the denial notice.

B. Any A request for a variance must be made in writing and received by the department prior to the denial of the private well permit, or within 60 days after such denial.

C. In the event a person applies for a variance within the 60-day period provided by subsection B above, the date for appealing the denial of the permit, pursuant to subsection A above, shall commence from the date on which the department acts on the request for a variance.

D. Pursuant to the Administrative Process Act (§ 9-6.14:1 (§ 2.2-4000 et seq. of the Code of Virginia) an aggrieved owner party may appeal a final decision of the commissioner to an appropriate circuit court.

12VAC5-630-220. Permits and inspection statement; general.

A. All private wells shall be constructed and located in compliance with the requirements as set forth in this chapter.

A. Except as provided in 12VAC5-630-220 B below, after B. After [ the effective date of this chapter November 6, 2024 ], no person shall construct, alter, rehabilitate, abandon, or extend increase the depth of a private well, or allow the construction, alteration, rehabilitation, abandonment, or extension activity to increase the depth of a private well, without a written construction permit from the commissioner. Conditions may be imposed on the issuance of any a permit and no private well shall be constructed or modified in violation of those conditions. The replacement of a well pump, or the replacement of a well seal or cap with an equivalent well seal or cap, or the vertical extension of the well casing above the ground surface shall not be considered a well modification alteration.

B. No permit shall be required for the construction, operation, or abandonment of dewatering wells. Furthermore, dewatering wells are exempted from the construction requirements found in 12VAC5-630-410. All dewatering wells shall be abandoned within 60 days of construction. Abandonment in this case means the removal of the well point, well casing, screening, and other appurtenances associated with the construction and operation of the well.

C. Except as provided in 12VAC5-630-320, no person shall place a private well in operation, or cause or allow a private well to be placed in operation, without obtaining a written inspection statement pursuant to 12VAC5-630-310 and 12VAC5-630-330.

D. Except as provided in 12VAC5-630-270, 12VAC5-630-290, and 12VAC5-630-300, construction permits for a private well shall be deemed valid for a period of 54 18 months from the date of issuance, with provision for one 18-month renewal.

12VAC5-630-230. Procedures for obtaining a construction permit for a private well.

A. Construction permits are issued by the authority of the commissioner. All requests Requests for a private well construction permit shall be by written application, signed by the owner or his the owner's agent, and shall be directed to the district or local health department. All applications Applications shall be made on an application form provided by the district or local health department and approved by the commissioner.

B. An application shall be deemed completed upon receipt by the district or local health department of a signed and dated application, together with the appropriate fee, containing the following information:

1. The property owner's name, address, and telephone number;

2. The applicant's name, address, and [ phone telephone ] number (if different from subdivision 1 above of this subsection);

3. A statement signed by the property owner, or his the owner's agent, granting the Health Department department access to the site for the purposes of evaluating the suitability of the site for a well and allowing the department access to inspect the well after it is installed;

4. A statement indicating whether the adjacent property is used for an agricultural operation;

5. Information required per 12VAC5-630-380 E if necessary.

6. A site plan showing the proposed well site, property boundaries, accurate locations of actual or proposed sewage disposal systems, recorded easements, and other sources of contamination within 100 feet of the proposed well site, and at the option of the applicant a proposed well design; and

5. 7. When deemed necessary because of geological or other natural conditions, plans and specifications detailing how the well will be constructed.

12VAC5-630-240. Issuance of the construction permit.

A. A construction permit shall be issued to the owner by the commissioner no later than 60 days after receipt of a complete and approvable application submitted under 12VAC5-630-230 that meets requirements for issuance of the permit. If applicable, the applicant shall comply with 12VAC5-630-340 prior to issuance of the permit.

B. The permit shall indicate a well site or a well area.

1. A well site shall be designated as a specific location that can be identified on the property by means of measurement from identified fixed points on the property.

2. A well area may be designated as a polygon or as a defined radius around a proposed well site. The well area shall be described in sufficient detail that it can be identified on the property by means of measurement from identified fixed points on the property.

12VAC5-630-250. Emergency procedures.

Applications for replacement wells that meet the definition of an emergency well replacement (12VAC5-630-10) shall have priority over normal applications for private well permits. Emergency procedures are as follows:

A. 1. Drinking water wells. In the event When a private drinking water well has failed and must be replaced, the local health department will a licensed onsite soil evaluator, professional engineer, or licensed water well systems provider shall conduct a sanitary survey of the property and surrounding area to determine the most suitable location. If a site is found that meets the minimum site requirements of this chapter, including the minimum separation distances contained in Table [ 3.1 1 of 12VAC5-630-380 ] and 12VAC5-630-380 F H, the local health department will issue a permit for that site. If a site cannot be located that meets the minimum separation distances listed in Table [ 3.1 1 of 12VAC5-630-380 ] and 12VAC5-630-380 F H, the local health department shall identify a site that complies with the minimum separation distances to the greatest extent possible. However, the replacement well shall not be located closer to any a source of contamination than the existing well it is replacing. Replacement drinking water wells must meet the sampling requirements of 12VAC5-630-370 D and E 12VAC5-630-431 E and F.

B. 2. Heat pump wells or commercially dependent wells. If a heat pump well or commercially dependent well must be replaced, the applicant shall propose a replacement site based on the technical requirements of the heat pump system or commercial establishment. The local health department will conduct a sanitary survey of the property and surrounding area to determine if the site meets the minimum site requirements of this chapter including the minimum separation distances contained in Table 3.1 and 12VAC5-630-380 F. A licensed onsite soil evaluator, professional engineer, or water well systems provider shall conduct a sanitary survey of the property and surrounding area to determine the most suitable location. If the site meets the minimum requirements of this chapter, the local health department will issue a permit for that site. If a site cannot be located that meets the minimum separation distances listed in Table [ 3.1 1 of 12VAC5-630-380 ] and 12VAC5-630-380 F, the local health department shall identify a site that complies with the minimum separation distances to the greatest extent possible. However, the replacement well shall not be located closer to any a source of contamination than the existing well it is replacing. If the replacement heat pump well or commercially dependent well must be placed closer to a sewage disposal system (but no closer than the existing well it is replacing) the well shall be sampled for fecal coliforms. If fecal coliforms are present in the sample and further investigation reveals that the groundwater is contaminated, the well shall be abandoned.

12VAC5-630-260. Express Class IV construction permits.

If A. When a Class IV well is proposed for property that does not have an onsite sewage disposal system, either active or inactive, an application may be made for an express Class IV construction permit. An application for an express Class IV construction permit shall be made on a form provided by the district or local health department and approved by the commissioner.

B. An application shall be deemed completed upon receipt by the district or local health department of a signed and dated application, together with the appropriate fee, containing the following information:

1. The property owner's name, address, telephone number, and personal signature. The owner's signature will acknowledge that the permit will be issued without the benefit of a site visit by the local health department prior to the issuance of the construction permit; that the permit is being issued based upon the information provided on the accompanying site plan; that the property owner also acknowledges that if the well is found not to comply with the minimum separation distances or any other provision of this chapter, the well must be abandoned at the direction of the local or district health director; and that a variance will not be considered if the improper location of the well is a result of the failure by the owner, his the owner's agent, or the well driller water well systems provider to provide complete or accurate information on the site plan submitted with the application or to install the well in accordance with the permit.;

2. Address and directions to the property;

3. The proposed use of the well;

4. The name, address, telephone number, Class B (minimum) license number, and signature of the well driller water well systems provider who is to construct the well;

5. A statement signed by the property owner (and not his the owner's agent) granting the department access to the site for the purposes of inspecting the property and the well during and after its installation until the well is approved by the department or any a required abandonment is completed; and

6. A site plan showing the proposed well site, property boundaries, recorded easements, and accurate locations of actual or proposed sources of contamination (including, but not limited to those listed in Table [ 3.1 1 ] of 12VAC5-630-380) within 100 feet of the proposed well site, and at the option of the applicant a proposed well design. If the proposed well site is located on or at the base of sloping topography, the minimum separation distances shown on the site plan for any sources of contamination within a 60 degree arc slope of the proposed well site must be increased 25 feet for every 5.0% slope.

12VAC5-630-270. Issuance of express Class IV construction permits and final inspection.

A. Issuance of express Class IV construction permit. Upon receipt of a complete and approvable application, as defined in 12VAC5-630-260, by a local or district health department with multiple sanitarians environmental health specialists, the department shall exercise all due diligence to issue a permit either on the date of receipt or the following business day. If the local or district office has only one assigned sanitarian environmental health specialist, the local or district department will exercise all due diligence to issue the permit as soon as possible. Failure by the department to issue the permit within the specified time does not authorize the construction of the well without a permit. If applicable, the applicant shall comply with 12VAC5-630-340 prior to the issuance of the permit.

B. Validity of express Class IV construction permits. Express Class IV construction permits shall only be valid for a period of 30 days from the date of issuance.

C. Inspection. If, upon inspection of the well, it is found that the well location does not comply with the minimum separation distances or any other [ provision provisions ] of this chapter, no inspection statement shall be issued and the well shall be immediately abandoned by the property owner in accordance with 12VAC5-630-450 upon notification and direction by the local or district health director. The commissioner shall not grant a variance if the improper location of the well is a result of the failure by the owner, his the owner's agent, or the well driller water well systems provider to provide complete or accurate information on the site plan submitted with the application or to install the well in accordance with the permit.

The construction of the well shall also comply with this chapter.

12VAC5-630-271. Express geothermal well permits.

A. The issuance of an express geothermal permit is contingent upon proper registration and payment of application fees and applies to the construction of wells used solely for a closed-loop geothermal heating system.

B. A single application and a single fee are required for any geothermal well system. The fee is the same as for a single private well. A registration statement for closed loop construction permitting shall be made on a form provided and approved by the division. The registration shall include the following information:

1. The property owner's name, address, and telephone number;

2. The address of and directions to the property;

3. The proposed use of the well;

4. The name, address, telephone number, and contractor license number of the well driller water well systems provider;

5. A statement signed by the property owner granting the department access to the site for the purpose of inspecting the property and the well during and after the well installation until the well is approved by the department or any required corrections are made;

6. A site plan, drawn to scale, showing the proposed well site or sites, property boundaries, recorded easements, and accurate locations of actual or proposed sources of contamination (including but not limited to those listed in Table [ 3.1 1 ] of 12VAC5-630-380) within 100 feet of the proposed well site or sites; and

7. A statement signed by the licensed well driller water well systems provider that the location and construction of the well or wells will comply with the requirements of this chapter.

C. A single application fee is required for any geothermal well system, regardless of the number of wells included in the system. The fee is the same as for a single private well.

12VAC5-630-272. Issuance of express geothermal well construction permit, inspection, and final approval.

A. Issuance of the express geothermal well permit. Upon receipt of a complete registration statement and the appropriate fee, the department will acknowledge receipt of the registration statement and issue the permit with a copy given to the contractor. The construction of the geothermal heating system may begin immediately upon submission of a complete registration statement and counter-signature denoting receipt by the department.

B. Inspection. The department, at its sole discretion, may inspect the closed-loop geothermal well any time from after acceptance of the registration statement until after the installation is approved. If, upon inspection of the well, it is found that the well location does not comply with the minimum separation distances or any other [ provision provisions ] of this chapter, no inspection statement shall be issued until the deficiencies have been corrected.

C. Final approval. Upon receipt of the Uniform Water Well Completion Report [ , as required in 12VAC5-630-440, ] and completion of any inspections deemed necessary to ensure compliance with this chapter, or unless the department has evidence to indicate that the well is not in compliance with the requirements of this chapter, the local health department will provide the owner with a statement that the wells are approved for use.

12VAC5-630-280. Denial of a construction permit.

If it is determined that (i) the proposed design is inadequate or that; (ii) site, geological, hydrological, or other conditions exist that do not comply with this chapter or would preclude the safe and proper operation of a private well system, or that; (iii) the installation of the well would create an actual or potential health hazard or nuisance,; or (iv) the proposed design would adversely impact the ground water groundwater resource, the permit shall be denied and the owner shall be notified in writing, by certified mail, of the basis for the denial. The notification shall also state that the owner has the right to appeal the denial.

12VAC5-630-290. Revocation of construction permits or inspection statements.

The In accordance with 12VAC5-630-331, the commissioner may revoke a construction permit or inspection statement for any of the following reasons:

1. Failure to comply with the conditions of the permit;

2. Violation of any of this chapter for which no variance has been issued;

3. Facts become known which reveal that a potential health hazard would be created or that the ground water groundwater resources may be adversely affected by allowing the proposed well to be installed or completed.

12VAC5-630-300. Voidance of construction permits.

Null and void. All A. In accordance with 12VAC5-630-331, the commissioner has authority to declare well construction permits are or inspection statements null and void when (i) conditions such as house location, sewage system location, sewerage system location, topography, drainage ways, or other site conditions are changed from those shown on the application, or (ii) conditions are changed from those shown on the construction permit, or (iii).

B. Construction permits are null and void when more than 54 18 months elapse from the date the permit was issued or renewed. Reapplication for the purposes of having an expired permit reissued shall be the responsibility of the owner, and such reapplication shall be handled as an initial application and comply fully with 12VAC5-630-230.

12VAC5-630-310. Statement required upon completion of construction.

Upon Within 30 days of completion of the construction, alteration, rehabilitation, abandonment, or extension deepening of a private well, the owner or, the owner's agent, or water well systems provider shall submit to furnish the district or local health department a statement, signed by the contractor, upon the form set out in 12VAC5-630-490, completed uniform water well completion report [ (GW-2) ]. The [ GW-2 uniform water well completion report ] shall be signed by the water well systems provider and state that the well was installed, constructed, or abandoned in accordance with the permit, and further that the well complies with all applicable state and local regulations, ordinances, and laws.

12VAC5-630-320. Inspection and correction.

No well shall be placed in operation, except for the purposes of testing the mechanical soundness of the system, until inspected by the district or local health department, corrections are made if necessary, and the owner has been issued an inspection statement by the district or local health department.

12VAC5-630-330. Issuance of the inspection statement.

Upon satisfactory completion of the requirements of 12VAC5-630-310, 12VAC5-630-320, 12VAC5-630-340, 12VAC5-630-370, [ and ] 12VAC5-630-430 [ , and 12VAC5-630-440 ], the commissioner shall issue an inspection statement to the owner. The issuance of an inspection statement does not denote or imply any a warranty or guarantee of the water quality or quantity by the department or that the private well will function for any a specified period of time. It shall be the responsibility of the owner or any subsequent owner to maintain, repair, replace, or to comply with the requirements to abandon any a private well.

12VAC5-630-331. Enforcement, notices, informal conferences.

A. The commissioner may, after providing a notice of intent to revoke a construction permit or inspection statement, and after providing an opportunity for an informal conference in accordance with § 2.2-4019 of the Code of Virginia, revoke or declare null and void a construction permit or inspection statement for flagrant or continuing violation of this chapter. Any person to whom a notice of revocation or null and void is directed shall immediately comply with the notice. Upon revocation, the former construction permit or inspection statement holder shall be given an opportunity for appeal of the revocation in accordance with the Administrative Process Act (§ 2.2-4000 et seq. of the Code of Virginia).

B. The commissioner may summarily suspend an inspection statement to operate a private well if continued operation constitutes a substantial and imminent threat to public health. Upon receipt of such notice that an inspection statement is suspended, the well owner shall cease private well operations immediately. Whenever an inspection statement is suspended, the holder of the inspection statement shall be notified in writing by certified mail or by hand delivery. Upon service of notice that the inspection statement is immediately suspended, the former inspection statement holder shall be given an opportunity for an informal conference in accordance with § 2.2-4019 of the Code of Virginia. The request for an informal conference shall be in writing and shall be filed with the local health department by the former holder of the inspection statement. If written request for an informal conference is not filed within 10 working days after the service of notice, the suspension is sustained. Each holder of a suspended permit shall be afforded an opportunity for an informal conference within three working days of receipt of a request for the informal conference. The commissioner may end the suspension at any time if the reasons for the suspension no longer exist.

C. Any person affected by a determination issued in connection with the enforcement of this chapter may challenge such determination in accordance with the provisions of the Administrative Process Act (§ 2.2-4000 et seq. of the Code of Virginia).

D. All private wells shall be constructed, operated, and maintained in compliance with the requirements as set forth in this chapter. The commissioner may enforce this chapter through any means lawfully available pursuant to § 32.1-27 of the Code of Virginia, and nothing in this chapter shall be construed as preventing the commissioner from making efforts to obtain compliance through warning, conference, or any other appropriate enforcement means.

12VAC5-630-350. General.

This chapter does not apply to private wells constructed, altered, rehabilitated or extended or abandoned prior to the effective date of these regulations September 1, 1990, unless the such private well construction is modified or expanded subsequently altered or abandoned after the effective date of these regulations September 1, 1990, in which case such alteration or abandonment shall be performed in accordance with this chapter.

The class of well to be constructed shall be determined by the local or district health department or the division.

12VAC5-630-360. Classes of water wells.

The following classes Classes of private wells are established for purposes of this chapter. These classes are in addition to those established in the current Commonwealth of Virginia Waterworks Regulations (12VAC5-590-10 et seq.) (12VAC5-590) and are intended for use for private well systems:

1. Class III - Private wells constructed to be used as a source of drinking water. There are three subclasses:

a. Class IIIA - Drilled wells in which the annular space around the casing is grouted to a minimum depth of 20 feet.

(1) The well shall be drilled and cased to a depth of at least 100 feet.

(2) The cased drill hole shall pass through at least 50 feet of collapsing material such as caving sand, gravel, or other material that will collapse against the casing.

b. Class IIIB - Drilled wells in which the casing is installed to a minimum depth of 50 feet and the annular space around the casing is grouted to at least 50 feet.

c. Class IIIC - Drilled, bored, driven, or jetted wells other than Class IIIA and Class IIIB.

2. Class IV - Private wells constructed for any a purpose other than use as a source of drinking water. There are three subclasses:

a. Class IVA - Drilled wells in which the annular space around the casing is grouted to a minimum depth of 20 feet.

(1) The well shall be drilled and cased to a depth of at least 100 feet.

(2) The cased drill hole shall pass through at least 50 feet of collapsing material such as caving sand, gravel, or other material that will collapse against the casing.

b. Class IVB - Drilled wells in which the casing is installed to a minimum depth of 50 feet and the annular space around the casing is grouted to at least 50 feet.

c. Class IVC - Drilled, bored, driven, or jetted wells other than Class IVA and Class IVB.

3. Conversion of well class. A Class IV well may be converted to a corresponding Class III well provided the well meets (i) the location and construction standards set forth in this chapter and the water quality standards set forth in 12VAC5-630-431 and (ii) a construction permit application and a revised uniform water well completion report form are submitted to the department.

12VAC5-630-370. Water quality and quantity. (Repealed.)

A. Class IV wells exempt. The water quality requirements contained in this section apply only to Class III private wells. Class IV private wells (wells not constructed as a source of drinking water) are not subject to any quality requirements. These regulations contain no well yield requirements. See 12VAC5-630-460 for suggested minimum well yields for residential supplies.

B. Sample tap. A sample tap shall be provided at or near the water entry point into the system so that samples may be taken directly from the source; this requirement may be met by utilizing the first tap on a line near where the plumbing enters the house (may be a hose bib), provided the tap precedes any water treatment devices.

C. Disinfection. The entire water system including the well shall be disinfected prior to use (12VAC5-630-430 and 12VAC5-630-470).

D. Sampling. After operating the well to remove any remaining disinfectant, a sample of the water from the well shall be collected for bacteriological examination. The sample may be collected by the owner, well driller, or other person in accordance with procedures established by the department and provided the sample is submitted to a private laboratory certified by the Department of General Services, Division of Consolidated Laboratory Services, for analysis.

E. Test interpretation. A Class III private well shall be considered satisfactory if the water sample(s) test(s) negative for coliform organisms as described in subdivision 1 or 2 below. Sources with positive counts shall be tested as described in subdivision 3 below to determine if the water supply is amenable to continuous disinfection (chlorination). Samples that exhibit confluent growth shall be considered inconclusive and another sample shall be collected.

1. Where a private well has no unsatisfactory water sample within the previous 12 months, one water sample which tests negative for coliform bacteria shall be considered satisfactory for coliform organisms.

2. Where a private well has had one or more positive water samples within the past 12 months for coliform bacteria, at least two consecutive samples must be collected and found negative for coliform organisms before the supply may be considered satisfactory for coliform organisms. The samples must collected at least 24 hours apart and the well may not be disinfected between samples.

3. When a private well does not test satisfactory for coliform organisms continuous disinfection may be recommended to the homeowner if the water supply is found to be suitable for continuous disinfection. A minimum of 10 samples shall be collected and tested for total coliform using an MPN methodology. The geometric mean of the samples shall be calculated and if the result is less than 100 organisms per 100 ml, the supply shall be considered satisfactory for continuous disinfection.

F. Water treatment. If tests indicate that the water is unsatisfactory and no other approvable source is available, adequate methods of water treatment shall be applied and demonstrated to be effective pursuant to 12VAC5-630-370 E 3 prior to the issuance of an inspection statement. The district or local health department shall be consulted when treatment is necessary.

12VAC5-630-380. Well location.

A. The private well shall be sited for the protection of public health and the aquifer, with appropriate consideration given to distance from potential contamination sources; vulnerability to known or suspected natural risks (e.g., flooding); potential for interference with utilities; accessibility for drilling machinery and support equipment; and safety of the public and well construction personnel.

B. Sanitary survey. Any obvious source Obvious sources of potentially toxic or dangerous substances within 200 feet of the proposed private well shall be investigated as part of the sanitary survey by the district or local health department. Sources of contamination may include, but are not limited to, items listed in Table [ 3.1, 1; ] abandoned wells,; pesticide treated soils, underground; petroleum or chemical storage tanks, drums, totes, or other storage containers (aboveground and underground); and other sources of physical, chemical, or biological contamination. If the source of contamination could affect the well adversely, and preventive measures are not available to protect the ground water groundwater, the well shall be prohibited. The minimum separation distance between a private well and structures, topographic features, or sources of pollution shall comply with the minimum distances shown in Table [ 3.1 1 ]. Where the minimum separation distances for a Class IV well cannot be met, a permit may be issued under this chapter for a well meeting all of the criteria in 12VAC5-630-400 and 12VAC5-630-410 and the separation distance requirements for either a Class IIIA or IIIB well, without deviation, and such Class IV well shall not be required to meet the water quality requirements of 12VAC5-630-370.

TABLE 3.1 DISTANCES (IN FEET) BETWEEN A WELL AND A STRUCTURE OR TOPOGRAPHIC FEATURE
Structure or Topographic Feature	Class IIIC or IV	Class IIIA or B
Building foundation	10	10
Building foundation (termite treated)	501	501
House sewer line	502	502
Sewer main, including force mains	503	503
Sewerage system	50	50
Pretreatment system (e.g. septic tank, aerobic unit, etc.)	50	50
Sewage disposal system or other contaminant source (e.g., drainfield, underground storage tank, barnyard, hog lot, etc.)	100	50
Cemetery	100	50
Sewage Dump Station	100	501
1See 12VAC5-630-380
2Private wells shall not be constructed within 50 feet of a house sewer line except as provided below. Where special construction and pipe materials are used in a house sewer line to provide adequate protection, and the well is cased and grouted to the water bearing formation, all classes of private wells may be placed as close as 10 feet to the house sewer line. Special construction for house sewer lines constitutes cast iron pipe with water-tight caulked joints or mechanical joints using neoprene gaskets, or solvent welded Schedule 40 or better polyvinyl chloride (PVC) pipe. It is the responsibility of the applicant to provide documentation from the contractor that such construction and pipe materials have been installed. In no case shall a private well be placed within 10 feet of a house sewer line.
3Private wells shall not be constructed within 50 feet of a sewer main except as provided below. Where special construction and pipe materials are used in a sewer main to provide adequate protection, and the well is cased and grouted to the water bearing formation, Class III wells may be placed as close as 35 feet to a sewer main and Class IV wells as close as 10 feet. Special construction for sewer mains constitutes ductile iron pipe with water-tight joints, solvent welded Schedule 40 or better polyvinyl chloride (PVC) pipe (SDR-35 plastic PVC with neoprene gaskets). It is the responsibility of the applicant to provide documentation from the local building official or sanitary district that such construction and pipe materials have been installed. In no case shall a Class III well be place within 35 feet of a sewer main. Likewise, in no case shall a Class IV well be placed within 10 feet of a sewer main.

TABLE [ 3.1 1 ] SEPARATION DISTANCES (IN FEET) [ BETWEEN A WELL AND A STRUCTURE OR TOPOGRAPHIC FEATURE ]
[ Structure or Topographic ] Feature	Minimum Separation Distance				Exceptions
	Class IIIA/B	Class IIIC	Class IVA/B	Class IVC
1. Building foundation	15	15	15	15	10 feet if structure is treated with borate based termite treatment
2. House sewer line a. Constructed of cast iron pipe with water-tight caulked joints; mechanical joints using neoprene gaskets; or solvent welded Schedule 40 or better PVC pipe – provided the well is cased and grouted to water bearing formation	10	10	10	10	None
b. Other or unknown construction; or if well is not cased and grouted to water bearing formation	50	50	50	50	None
3. Sewer main, including force main a. Constructed of ductile iron pipe with water-tight joints; solvent welded Schedule 40 or better PVC (SDR-35 plastic PVC with neoprene gaskets) – provided the well is cased and grouted to water bearing formation	35	35	35	35	None
b. Other or unknown construction; or if well is not cased and grouted to water bearing formation	50	50	50	50	None
4. Sewerage system	50	50	50	50	None
5. Active or permitted pretreatment system (e.g., septic tank or aerobic unit)	50	50	50	50	None
6. Active or permitted drainfield (including reserve drainfield).	50	100	50	100	None
7. Other contamination source (e.g., petroleum storage tank, drum, tote or other container [ aboveground or underground ], barnyard, landfill, animal lot, fertilizer or pesticide storage)	50	100	50	100	Tanks containing propane or other liquified petroleum gases are not deemed sources of contamination. However, the National Fire Protection Association Liquified Petroleum Gas Code (NFPA-58) recommends a minimum of 10 feet from sources of ignition.
8. Permanently abandoned sewage disposal systems	25	25	25	25	None
9. Reclaimed water distribution pipeline	50	50	50	50	35 feet if RWDP is constructed of water pipe material in accordance with 9VAC25-740-110.
10. Biosolids application [ sites fields (as field is defined in 9VAC25-32-10) ]	100	100	100	100	[ No separation distance applies if biosolids have not been applied within the 12 months preceding well construction. ]
11. Bioretention pond a. Unlined	50	50	50	50
b. Lined	10	10	10	10
12. Cemetery	50	100	50	100	None
13. Sewage dump station	50	100	50	100	None
14. Property line a. All properties except as described in subdivision 14 b of this table	5	5	5	5	None
b. With an adjacent property of three acres or larger used for an agricultural operation as defined in § 3.2-300 of the Code of Virginia.	50	50	50	50	Exemption for reduced distance applies if the adjacent property owner grants written permission for construction within 50 feet of the property line, or if it is certified that no other site on the property complies with the regulations for construction of a private well.

B. C. Downslope siting of wells from potential sources of pollution. Special precaution shall be taken when locating a well within a 60 degree arc directly downslope from any part of any an existing or intended onsite sewage disposal system or other known source of pollution, including, but not limited to, buildings subject to termite or vermin treatment, or used to store polluting substances or storage tanks or storage areas for petroleum products or other deleterious substances identified in subsection B of this section, including Table 1. The minimum separation distance shall be: (i) increased by 25 feet for every 5.0% of slope; or (ii) an increase shall be made to the minimum depth of grout and casing in the amount of five feet for every 5.0% of slope.

C. D. Sites in swampy areas, low areas, or areas subject to flooding. No private well covered by this chapter shall be located in areas subject to the collection of pollutants such as swampy areas, low areas, or areas subject to flooding. Wells located in flood plains shall be adequately constructed so as to preclude the entrance of surface water during flood conditions. At a minimum, such construction will include extending the well terminus 18 inches above the annual flood level and grading to provide positive drainage in all directions. Other requirements may be made as determined on a case by case case-by-case basis by the division.

D. E. Property lines. There is no minimum separation distance between a private well and a property line established by this chapter. The owner is responsible for establishing a separation distance from property lines such that the construction and location of the well will be on the owner's property and comply with any local ordinances. No private well shall be constructed within five feet of a property line. If the proposed private well is on a property adjoining properties of three acres or larger used for an agricultural operation, no private well shall be constructed within 50 feet of the property line except as exempted by the following:

1. A notarized letter from the adjacent property owner [ that ] grants permission to construct a well within 50 feet of the property line. The statement shall be recorded and indexed in the land records of the circuit court having jurisdiction over the property where the well is to be located; or

2. A certification statement from a licensed onsite soil evaluator, professional engineer, or licensed water well systems provider confirms that no other well location on the property complies with this chapter. Reasons that a well location on a property may not comply with this chapter include:

a. The property is not large enough to allow a location of a well 50 feet or more from the property line. In this case, the well should be located at the greatest distance from the property line consistent with this chapter.

b. The location of a well 50 feet or more from the property line prevents separation distance requirements identified in 12VAC5-630-380 B being achieved on the property, provided that required separation distances can be achieved if the well is located fewer than 50 feet from the property line. In this case, the well should be located at the greatest distance from the property line consistent with this chapter. Well owners shall not be obligated to undertake otherwise optional actions, such as substitution of an alternative onsite sewage system in place of a conventional system where a conventional system is suitable, solely to comply with the requirement to maintain a [ 50 feet 50-foot ] separation distance from an adjoining property of three acres or larger used for an agricultural operation.

c. The location is inaccessible to well drilling equipment as a result of topography, surface water, structures, existing onsite sewage system components, overhead or buried utilities, or other obstacle.

d. Other reasons that a well located greater than 50 feet from the property line may not comply with this chapter may be considered by the division on a case-by-case basis.

E. F. Utility lines. There is no minimum separation distance between a private well and subsurface utility lines (electric, gas, water, cable, etc.). The minimum separation distance may, however, be established by the individual utility company or local ordinance. Clearance distance from overhead electrical utilities relative to drilling equipment is subject to an Occupational Safety and Health Administration or related safety standard, and this factor shall be considered in determination of well location. No private well shall be constructed within a utility easement without documentation of permission from the utility.

F. Pesticide and termite treatment. No Class III private well shall be placed closer than 50 feet from a building foundation that has been chemically treated with any termiticide or other pesticide. No Class IV private well shall be placed closer than 50 feet to a building foundation that has been chemically treated with any termiticide or other pesticide except as provided below. Further, no termiticides or other pesticides shall be applied within five feet of an open water supply trench. A Class IV well may be placed as close as 10 feet to a chemically treated foundation if the following criteria are met:

1. The aquifer from which the water is withdrawn must be a confined aquifer (i.e., there must be an impermeable stratum overlying the water bearing formation).

2. The well must be cased and grouted a minimum of 20 feet or into the first confining layer between the ground surface and the water bearing formation from which water is withdrawn, whichever is greater. When the first confining layer is encountered at a depth greater than 20 feet, the well shall be cased and grouted to the first confining layer between the ground surface and the water bearing formation from which water is withdrawn.

3. The material overlaying the confined aquifer must be collapsing material.

G. Permanently abandoned sewage disposal systems.

1. No private well shall be constructed within 25 feet of a permanently abandoned sewage disposal system. The following criteria is to determine if a sewage disposal system is permanently abandoned.

a. The drainfield is no longer connected to a structure or other sewage source.

b. The drainfield has been inactive for at least 24 consecutive months.

c. The septic tank and distribution box have been pumped, limed, crushed, and either filled with an inert material or removed from the site.

2. Documentation of disconnection may include:

a. A statement from the owner of the drainfield.

b. A notification of onsite sewage system abandonment recorded and indexed in the grantor index of the land records of the circuit court having jurisdiction over the site where the sewage system is located.

c. A contractor invoice or other record documenting system disconnection, including disposition of septic tank and distribution box.

d. Record from a public sewer operator indicating date of connection.

3. Abandoned sewage disposal systems that do not meet the requirements of this subsection shall be treated as active systems with respect to determining the minimum separation distance to sources of contamination listed in Table 1.

H. Reclaimed water distribution pipeline. No private well shall be placed closer than 50 feet from a reclaimed water distribution pipeline. This separation distance can be reduced to 35 feet provided that the reclaimed water distribution pipeline is constructed from a water pipe material in accordance with American Water Works Association (AWWA) specifications and pressure tested in place without leakage prior to backfilling. The hydrostatic test shall be conducted in accordance with the AWWA standard (ANSI/AWWA C-600-05) for the pipe material, with a minimum test pressure of 30 psi. A Class IV well located closer than 35 feet from a reclaimed water distribution pipeline shall not be converted to a Class III well.

I. Biosolids application [ site field ]. No private well shall be placed closer than 100 feet from [ land a field, as defined in 9VAC25-32-10, ] on which biosolids are being applied [ or have been applied within the previous 12 months ].

J. Bioretention pond. No private well shall be placed closer than 50 feet from an unlined bioretention pond or 10 feet from a lined bioretention pond. A Class IV well shall not be converted to a Class III well if the Class III well separation distance is not met.

K. Exception for closed-loop ground-source heat pump wells. Closed-loop ground-source heat pump wells, depending upon construction, may not have to comply with the minimum separation distances for Class IV wells listed in Table [ 3.1 1 ]. If the well is grouted 20 feet, the minimum separation distances must comply with those listed for Class IV wells. If the well is grouted a minimum of 50 feet, the separation distances shall be those listed for Class IIIA or IIIB wells. If the well is grouted the entire depth of the well, the well does not have to comply with the minimum separation distances contained in Table [ 3.1 1 ].

12VAC5-630-390. Site protection.

A. No objects, articles, or materials of any kind which that are not essential to the operation of the well shall be placed or stored in a well, well house, on the well head or well pump or water treatment system, or within close proximity to them.

B. Fencing of an area around the well, or the placement of other barriers or restrictions, may be required as a condition of the permit under certain circumstances, such as to prohibit livestock access to the well head or to prohibit vehicles from damaging or polluting the area around the well head.

C. The area around the well shall be graded to divert surface water away from the well.

12VAC5-630-400. Materials.

A. General. All materials Materials used in private wells shall be lead free, labeled as approved by the National Sanitation Foundation (NSF) for water well use, have long-term resistance to corrosion and sufficient strength to withstand hydraulic, lateral, and bearing loads.

B. Drilling Fluids. Materials used for well bore stabilization and well development shall be labeled as meeting NSF/ANSI/CAN Standard 60-2020 environmental specifications.

C. Casing. Materials used for casing shall be watertight and shall consist of wrought iron, concrete tile, clay tile, steel, stainless steel, fiberglass, or plastic, all designed for water well use or other suitable materials as determined by the division. The division shall maintain a list of approved casing materials. Materials used for casing shall be labeled as conforming to NSF/ANSI/CAN 61-2021 (Drinking Water System Components – Health Effects) and NSF/ANSI/CAN 372-2020 (Drinking Water System Components – Lead Content).

1. Driven casings shall consist of ductile iron, steel or stainless steel and shall be equipped with a suitable drive boot.

2. Casings used for Class IIIA or IIIB drilled wells shall be steel, stainless steel or, plastic, or fiberglass.

3. Casings used for bored Class IIIC and IVC wells shall be concrete.

C. D. Screens. Where utilized, screens shall be constructed factory manufactured of stainless steel, plastic or other suitable materials as determined by the division. Screens shall be constructed of materials which that will not be damaged by any chemical or corrosive action of the ground water groundwater or future cleaning operations. Additionally, screens shall be constructed of materials which that will not degrade ground water groundwater quality. Allowable screen types include wire wrap, louvered, bridge slot, and factory slotted and shall be labeled as conforming to NSF/ANSI/CAN 61-2021 (Drinking Water System Components – Health Effects) and NSF/ANSI/CAN 372-2020 (Drinking Water System Components – Lead Content).

D. Joints. Joints shall be watertight and mechanically sound. Welded joints shall have smooth interior surfaces and shall be welded in accordance with acceptable welding practice. E. Grout. The grouting material used shall meet the appropriate specification listed in this subsection.

1. Neat cement grout shall consist of cement and water with not more than six gallons of water per bag (94 pounds) of cement.

2. Bentonite clay may be used in conjunction with neat Portland cement to form a grouting mixture. The bentonite used must be specifically recommended by the manufacturer as being suitable for use as a well grout material and cannot exceed 6.0% by weight of the mixture.

3. Bentonite clay used for grouting shall be sodium bentonite with a minimum of 20% clay solids by weight of water. The bentonite clay shall be specifically recommended by the manufacturer for use as a grouting material.

An exception exists (i) when exceptional conditions require the use of a less fluid grout, to bridge voids, a mixture of cement, sand and water in the proportion of not more than two parts by weight of sand to one part of cement with not more than six gallons of clean water per bag of cement may be used if approved by the district or local health department, or (ii) for bored wells only, a concrete (1-part sand, 1-part cement, 2-parts pea gravel mix with all aggregates passing a 1/2-inch sieve) grout with not more than six gallons of clean water per bag of cement may be used provided a minimum three-inch annular space is available.

4. Other grouting materials may be approved by the division on a case-by-case basis. Review and approval shall be based on whether the proposed material can consistently be expected to meet the intent of grouting expressed in 12VAC5-630-410 F 2. The proposed material must be an industry acceptable material used for the purpose of grouting water wells. Controlled low strength material (flowable fill) or other product incorporating fly ash, other coal combustion byproducts, or other wastes shall not be approved for use as grout.

E. Gravel. F. Gravel and sand utilized for gravel filter packed wells shall be uniformly graded, cleaned, washed, disinfected and of a suitable size, well rounded, acid resistant, and have a high silica content.

G. Water used during well construction shall be obtained from a suitable source or the well being constructed. A suitable source means a pure water source, or, when a pure water source is not locally available, water taken from another source then disinfected using compounds labeled as meeting NSF/ANSI/CAN Standard 60-2020 environmental specifications.

H. Compounds used in the disinfection of completed wells shall be labeled as meeting NSF/ANSI/CAN Standard 60-2020 environmental specifications.

12VAC5-630-410. Construction; general.

A. Private wells shall be constructed using the criteria described in this section. The water well system provider shall provide advance notification regarding the initiation of well construction to the district or local health department to allow department personnel the opportunity to observe well construction. The water well systems provider may construct the well as conditions warrant and shall be under no obligation to delay construction activities pending arrival of district or local health department personnel.

B. Well bore.

1. The method of advancement of the well bore in which the private well is constructed shall be determined by the water well systems provider relative to local geologic and aquifer conditions.

2. When the construction permit designates a well site, the well bore shall be placed at the well site. When the construction permit designates a well area, the well bore may be placed anywhere within the well area. If a well bore advanced within a well area must be discontinued for any reason, the well bore shall be abandoned in accordance with 12VAC5-630-450 and a new well bore may be undertaken within the well area.

3. Other land disturbance associated with well construction, such as grading and mud pit construction, is not limited to the well area.

4. With the exception of driven wells, the well bore shall be large enough to accommodate the well casing and screen with sufficient annular space on all sides of the casing in the interval to be grouted to freely accommodate a tremie pipe or sounding tube.

5. Drilling fluids used to stabilize the well bore shall be maintained within limits that will allow their complete removal from the water produced from the well, and shall not damage the capacity, efficiency, and quality of the well.

6. Representative samples of formation materials shall be collected during well bore advancement with sufficient frequency to allow for preparation of the driller's log (uniform water well completion report) of the type of rock, sediment, or soil encountered.

C. Casing.

1. The casing shall maintain the well bore by preventing its walls from collapsing, provide a channel for the conveyance of water, and protect the quality of the water withdrawn from the well. The thickness of the casing shall be sufficient to resist the force imposed during installation and which can be anticipated after installation.

1. 2. Class IIIA and IVA wells shall be cased to a depth of at least 100 feet.

2. 3. Class IIIB and IVB wells shall be cased to a depth of at least 50 feet.

3. 4. Except as provided in subdivisions a through e below, all Class IIIC and IV IVC wells shall be cased to a minimum depth of 20 feet or terminated not less than one foot in bedrock when bedrock is encountered at a depth less than 20 feet.

a. When in collapsing material, the casing shall terminate in the aquifer but in no instance be less than 20 feet.

b. Where an aquifer is encountered at less than 20 feet, Class IV IVC wells may be cased to within one foot of the water bearing strata. In the instance of Class IV wells the intent of this chapter is to protect ground water groundwater quality, and not to ensure a potable water supply.

Exception: Class IV wells placed closer than 50 feet from a building foundation treated with a chemical termiticide or other pesticide shall comply with the minimum casing depth requirements of 12VAC5-630-380 F 2.

c. Alternate casing depths may be accepted for bored wells when the only aquifer lies between 11 and 20 feet provided the casing is placed within one foot of the aquifer and must not be less than 10 feet in depth from the ground surface.

d. Class III C IIIC driven wells shall be cased to the water bearing strata; however, in no case less than 10 feet. No minimum casing requirements apply to Class IV IVC driven wells except that in order to protect ground water groundwater they shall be capable of meeting the minimum grouting requirements as described in subdivision [ C F ] 5 e of this section.

e. Closed-loop ground-source heat pump wells do not have to be cased.

4. All private 5. When PVC casing is terminated in bedrock, the well casing shall be sealed using a mechanical seal or packer.

6. Extension of casing above ground surface. Private well casings shall be extended at least 12 inches above ground or at least 12 inches above a concrete floor in a well house with a gravity flow drain. The following wells are exempted from this requirement; however, their location shall be permanently marked for easy location in the future:

a. Drilled shallow well suction pump systems that will not operate unless a vacuum is maintained. The casings for these wells are also the suction lines through which water is drawn.

b. Deep well ejector pump systems that utilize a casing adaptor and must maintain a vacuum to operate.

c. Closed-loop ground-source heat pump wells.

d. Heat pump return wells that are completely sealed.

5. All steel casings shall meet or exceed the material specifications found in 12VAC5-630-480.

6. No plastic well casing shall be installed which will exceed 80% of its RHCP (resistance to hydraulic collapse pressure). When experience has shown, in the division's opinion, that the prevailing geologic conditions are subject to collapse or shifting, or where heavy clay or unstable backfill materials occur, plastic well casings may not exceed 50% of the RHCP rating. It shall be the responsibility of the well driller to submit calculations to the division demonstrating that individual well casings do not exceed these ratings.

7. The casing shall be centered in the well bore the entire depth of the well in order to provide for even distribution of filter pack and grout in the annular space.

8. Joints shall be compatible with the casing material, specific to the task, and be watertight under normal operating conditions, with watertight joints above the screened interval.

9. Casing straightness and alignment:

a. Casing in all private wells shall be sufficiently straight that it will not interfere with the installation and operation of a pump suitable for the intended purpose of the well.

b. For casing intended to accommodate a line shaft turbine pump, the maximum allowable horizontal deviation of the well from the vertical shall not exceed 2/3 times the smallest inside diameter per 100 feet of that part of the well being tested to the depth of the anticipated pump installation.

B. D. Screens.

1. The screen shall allow passage of water from the aquifer and provide sufficient tensile, collapse, and compression strength to withstand the physical loading it will be exposed to during installation, completion, development, and operational conditions. When used for the prevention of entry of foreign materials, screens shall be free of rough edges, irregularities, or other defects. A positive watertight seal between the screen and the casing shall be provided when appropriate.

C. 2. Screen length, diameter, and slot size shall be determined based on field examination of representative samples of formation material collected during advancement of the well bore, and may be supplemented by sieve analysis of materials in the water bearing zone or geophysical logging of the well bore.

3. Joints between (i) casing and screen and (ii) screen and screen shall meet the requirements of subdivision C 8 of this section.

4. The bottom of the screen, or of the deepest screen in the case of multiple screens, shall be configured to reduce the possibility of native formation or well construction material heaving up into the screened interval. A closed bottom may not be required for screens installed in some formation materials.

5. The screen shall be centered in the well bore.

E. Filter pack.

1. When a filter pack is required, the filter pack material used shall be determined based on field examination of representative samples of the water bearing formation in the withdrawal interval, and may be supplemented by sieve analysis. The filter pack shall be placed in the annular space by a method that prevents bridging and creates uniform distribution.

2. The filter pack shall extend above the top of the screened interval to a thickness sufficient to compensate for settling that may occur during development and operation of the well.

3. Filter pack material may be used with a screen as a formation stabilizer when water is withdrawn from a poorly consolidated rock subject to disintegration and caving when the well is pumped. Formation stabilizer shall be at least as coarse as the formation native material.

F. Grouting.

1. General. All private Private wells shall be grouted. It is preferred that no openings are made in the side of the well casing.

2. Purpose. The annular space between the casing and well bore is one of the principal avenues through which undesirable water and contaminants may gain access to a well. The goal of grouting a well is to preclude the entrance of undesirable water and contaminants. Therefore, the annular space shall be filled with a neat cement grout, a mixture of bentonite and neat cement or bentonite clay grout specifically approved by the manufacturer for use as a grouting material.

3. Specifications. The grouting material used shall meet the appropriate specification listed below:

a. Neat cement grout shall consist of cement and water with not more than six gallons of water per bag (94 pounds) of cement.

b. Bentonite clay may be used in conjunction with neat Portland cement to form a grouting mixture. The bentonite used must be specifically recommended by the manufacturer as being suitable for use as a well grout material and cannot exceed 6.0% by weight of the mixture.

c. Bentonite clay used for grouting shall be sodium bentonite with a minimum of 20% clay solids by weight of water. The bentonite clay shall be specifically recommended by the manufacturer for use as a grouting material.

Exception: (i) When exceptional conditions require the use of a less fluid grout, to bridge voids, a mixture of cement, sand and water in the proportion of not more than two parts by weight of sand to one part of cement with not more than six gallons of clean water per bag of cement may be used if approved by the district or local health department, or (ii) for bored wells only, a concrete (1-1-2 mix with all aggregates passing a 1/2-inch sieve) grout with not more than six gallons of clean water per bag of cement may be used provided a minimum three-inch annular space is available and its use approved by the district or local health department.

In cases where an open borehole has been drilled below the depth to which the casing is to be grouted, the lower part of the hole must be backfilled, or a packer must be set in the hole, to retain the slurry at the desired depth. Backfilling the hole with gravel and capping with sand is an acceptable practice. Material ordinarily sold as plaster or mortar sand is usually satisfactory; more than half the sand should be of grain sizes between 0.012 inches and 0.024 inches.

3. Based on the well casing material and native geology, grout material shall be selected to minimize potential for spidering, cracking, or separation of grout from the well casing.

4. Other materials. Other grouting materials may be approved by the division on a case by case basis. Review and approval shall be based on whether the proposed material can consistently be expected to meet the intent of grouting expressed in 12VAC5-630-410 C 2. The proposed material must be an industry acceptable material used for the purpose of grouting water wells. When an open well bore has been drilled below the depth to which the casing is to be grouted, the lower part of the hole must be backfilled, or a packer must be set in the hole to retain the slurry at the desired depth. Backfilling the hole with gravel and capping with sand is an acceptable practice. Material ordinarily sold as plaster or mortar sand is satisfactory; more than half the sand should be of grain sizes between 0.012 inches and 0.024 inches.

5. Depth.

a. All Class IIIA and Class IVA wells shall be grouted to a minimum depth of 20 feet.

b. All Class IIIB and Class IVB wells shall be grouted to a minimum depth of 50 feet.

c. All Class IIIC and Class IV IVC wells shall be grouted to a minimum depth of 20 feet when the casing depth is equal to or greater than 20 feet. When the casing depth is less than 20 feet, the casing shall be grouted in accordance with this subsection, from the lower terminus of the casing to the surface.

Exception: Class IV wells placed closer than 50 feet from a building foundation treated with a chemical termiticide or other pesticide shall comply with the minimum grouting depth requirements of 12VAC5-630-380 F 2.

d. Alternate grouting depths may be accepted for bored wells when the only aquifer suitable for a private well lies between 11 and 20 feet provided the grouting shall terminate at least one foot above the aquifer but must not be less than 10 feet in depth from the ground surface.

e. Driven wells shall be grouted to a minimum depth of five feet by excavating an oversize hole at least four inches in diameter larger than the casing and pouring placing an approved grout mixture into the annular space.

6. Installation. Grout shall be installed by means of one of the following methods.

a. Placement using a grout pump or tremie pipe from the bottom of the annular space upward in one operation until the annular space is filled, whenever the grouting depth exceeds 20 feet. Pouring of grout is acceptable for drilled wells whenever grouting depth does not exceed 20 feet.

b. Pouring of grout is acceptable for bored wells whenever when the grouting depth does not exceed 30 20 feet provided there is a minimum of a [ 3-inch three-inch ] annular space [ and the annular space is free of standing water ]. Grouting shall be brought to the ground surface and flared to provide a one foot radius around the casing at least six inches thick. However, whenever pitless adapters are used, the grout shall terminate at the base of the pitless adapter. When an outer casing is necessary to construct a new well, where possible, the outer casing shall be pulled simultaneously with the grouting operation.

c. Bentonite chips or pellets are acceptable for bored wells when the grouting depth does not exceed 20 feet provided the annular space is at least four inches greater than the outside diameter of the casing or coupling and the casing [ and the annular space is free of standing water ]. Bentonite chips or pellets shall be placed via a tremie pipe having an interior diameter at least four times the size of the pellet or chip.

d. Placement of bentonite chips by free fall shall only occur within five feet of the ground surface.

7. Annular space. The clear annular space around the outside of the casing and the well bore shall be at least 1.5 inches on all sides except for bored wells which shall have at least a 3-inch annular space Surface completion of grout. Grout shall be brought to the ground surface and flared to provide a one-foot radius around the casing at least six inches thick. However, whenever pitless adapters are used, the grout shall terminate at the base of the pitless adapter. When an outer casing is necessary to construct a new well, where possible, the outer casing shall be pulled simultaneously with the grouting operation.

D. G. Additional casing and grouting. When a well is to be constructed within 100 feet of a subsurface sewage disposal system, which has been or is proposed to be installed at a depth greater than five feet below the ground surface, the casing and grouting of the water well shall be increased to maintain at least a 15-foot vertical separation between the trench bottom and the lower terminus of the casing and grouting.

E. H. Well head.

1. General. No open wells or well heads or unprotected openings into the interior of the well shall be permitted. Prior to the driller water well systems provider leaving the well construction site, the owner shall have the driller water well systems provider protect the well bore hole by installing a cover adequate to prevent accidental contamination.

2. Mechanical well seals. Mechanical well seals (either sanitary well seals or pitless adapters) shall be used on all Class III and Class IV wells and shall be [ water watertight ] and [ air tight airtight, ] except as provided in 12VAC5-630-410 F I 4.

3. Other. Wells greater than eight inches in diameter shall be provided with a watertight overlapping (shoebox) type cover, constructed of reinforced concrete or steel.

F. I. Appurtenances passing through casing.

1. General. All openings Openings through well casings shall be provided with a positive water stop.

2. Pitless well adapters. Pitless well adapters shall be subject to approval by the division. All pitless adapters shall be installed according to the manufacturers recommendations. When used, pitless units and pitless adaptors shall be attached to the casing in a manner that will make the connection watertight. If an access port is installed, it shall be watertight.

3. Sanitary well seals. Sanitary well seals shall be subject to approval by the division. All When used, sanitary well seals shall be installed according to the manufacturers manufacturer's recommendations. A one-piece top plate shall be used on a well that terminates outdoors.

4. Venting. Venting, where necessary as determined by the district health department, shall be provided in such a manner as to allow for the passage of air, but not water, insects, or foreign materials, into the well.

J. Well development.

1. "Well development" means the act of repairing damage to the geologic formation from drilling procedures and increasing the porosity and permeability of the materials surrounding the intake portion of the well. It is accomplished by application of mechanical energy, chemicals, or both to (i) remove drilling fluids and formation damage caused by the well bore drilling and well completion processes; (ii) remove formation fines near the well bore to increase hydraulic conductivity and create a filter medium; (iii) establish optimal hydraulic contact between the well and the geologic formation (aquifer) supplying water; (iv) provide for an acceptable level of sand and turbidity; and (v) provide for an appropriate level of drawdown at the production pumping rate.

2. Private wells shall be developed. Disinfection required by 12VAC5-630-430 and water quality testing required by 12VAC5-630-431 shall not be conducted on a well prior to well development.

K. Well maintenance and repair.

1. Equipment and water or other materials used during hydraulic fracturing of bedrock wells shall comply with 12VAC5-630-400.

2. Private wells shall be disinfected per 12VAC5-630-430 following maintenance, redevelopment, or other activity requiring access to the interior of the casing of a completed well.

12VAC5-630-420. Observation, monitoring, and remediation wells.

A. Except as provided in subsections B and C of this section, observation and, monitoring, and remediation wells are exempted from this chapter. The exemption shall not apply to test and exploration wells constructed for the purpose of evaluating groundwater quality or available quantity related to a proposed beneficial use such as water supply for a subdivision, office park, or proposed commercial or industrial application.

B. Observation or, monitoring, and remediation wells shall be constructed in accordance with the requirements for private wells if they are to remain in service after the completion of the ground water groundwater study.

C. Observation or, monitoring, and remediation wells shall be properly permanently abandoned in accordance with 12VAC5-630-450 within 90 days of cessation of use. Unless specifically allowed under terms of a permit issued by DEQ, temporary abandonment of observation, monitoring, and remediation wells shall not occur.

12VAC5-630-430. Disinfection.

All Class III private A. Private wells shall be disinfected before placing the well(s) well in service.

B. Methodology. Disinfection shall be accomplished by maintaining one of the following methods:

1. Maintaining a 100 mg/l solution of chlorine in the well for 24 hours utilizing the dosage rates set forth in 12VAC5-630-470.

2. Applying a quantity of water/chlorine solution to ensure a minimum of 100 mg/L of available chlorine throughout the well and immediate formation materials. Disinfection contact time shall be established on the basis of contact units, which are calculated as mg/L chlorine multiplied by hours of exposure. Contact time shall equate to a minimum of 1,000 contact units (50 mg/L chlorine x 20 hours = 1,000 contact units; 200 mg/L chlorine x 5 hours = 1,000 contact units; etc.).

12VAC5-630-431. Water quality.

A. Class IV wells exempt. The water quality requirements contained in this section apply to Class III private wells. Class IV private wells (wells not constructed as a source of water for human consumption) are not subject to water quality requirements.

B. Sample tap. A sample tap shall be provided at or near the water entry point into the system so that samples may be taken directly from the source; this requirement may be met by utilizing the first tap on a line near where the plumbing enters the house (may be a hose bib), provided the tap precedes any water treatment devices.

C. Disinfection. The entire water system, including the well, shall be disinfected prior to use pursuant to 12VAC5-630-430.

D. Sampling. After operating the well to remove any remaining disinfectant, a sample of the water from the well shall be collected for bacteriological examination. The sample may be collected by the owner, water well systems provider, or other person in accordance with procedures established by the department and provided the sample is submitted to a private laboratory accredited by the Department of General Services, Division of Consolidated Laboratory Services, for analysis.

E. Test interpretation. A Class III private well shall be considered satisfactory if the water sample tests negative for coliform organisms as described in subdivision 1 or 2 of this subsection. Sources with positive counts shall be tested as described in subdivision 3 of this subsection to determine if the water supply is amenable to continuous disinfection. Samples that exhibit confluent growth shall be considered inconclusive and another sample shall be collected.

1. When a private well has no unsatisfactory water sample within the previous 12 months, one water sample which tests negative for coliform bacteria shall be considered satisfactory for coliform organisms.

2. When a private well has had one or more positive water samples within the past 12 months for coliform bacteria, at least two consecutive samples must be collected and found negative for coliform organisms before the supply may be considered satisfactory for coliform organisms. The samples must be collected at least 24 hours apart and the well may not be disinfected between samples.

3. When a private well does not test satisfactory for coliform organisms, continuous disinfection may be recommended to the homeowner if the water supply is found to be suitable for continuous disinfection. A minimum of 10 independent samples shall be collected and tested for total coliform using an MPN methodology. To be independent, samples shall be collected no less frequently than one sample per day. The geometric mean of the samples shall be calculated and if the result is less than 100 organisms per 100 ml, the supply shall be considered satisfactory for continuous disinfection.

F. Water treatment. If tests indicate that the water samples test positive for coliform organisms and do not meet the standards described in this section and no other approved source is available, adequate methods of water treatment shall be applied. The treatment device shall be demonstrated to be effective pursuant to subdivision E 3 of this section prior to the issuance of an inspection statement. The district or local health department shall be consulted when treatment is necessary.

G. Conversion of Class IV well to Class III potable well. In order to convert an existing Class IV to a Class III well, the owner shall provide the following information to the local health department.

1. A complete application indicating the intent to convert the well classification.

2. A copy of the existing uniform water well completion report documenting that the well meets Class IIIA, Class IIIB, or Class IIIC construction standards in accordance with this chapter.

3. Confirmation that the well meets separation distance criteria for Class III wells listed on Table 1 [ of 12VAC5-630-380 ].

4. A negative bacteria water sample in accordance with subsections D, E, and F of this section.

12VAC5-630-440. [ Information to be reported. (Repealed.)

A copy of a Uniform Water Well Completion Report ] (see 12VAC5-630-490) [ shall be provided to the district or local health department within 30 days of the completion of the well or completion ] of alterations thereto, alteration, or abandonment of a private well. ]

12VAC5-630-450. Well abandonment.

A. Well abandonment is governed jointly by the Department of Environmental Quality and the Department of Health pursuant to § 62.1-44.92(6) of the Ground Water Act of 1973 (Repealed). In addition, the The abandonment of [ any ] a private well governed by this chapter or [ any ] a private well abandoned as a condition of a permit issued under this chapter shall be administered by the Department of Health in conformance with this section. The owner or owner's agent shall provide advance notification regarding the initiation of well abandonment to the district or local health department to allow department personnel the opportunity to observe well abandonment. The owner or owner's agent shall be under no obligation to delay abandonment activities pending arrival of department personnel.

B. Prohibited materials. The following materials, even if classifiable as clean fill or beneficial use byproducts in other applications, shall not be used as clean fill or grout in any well abandonment procedure.

1. Contaminated media.

2. Non-manufactured gravel, brick, broken concrete, crushed glass, porcelain, or road pavement, except as these materials are present as incidental constituents of undisturbed soil or natural earth materials.

3. Controlled low strength material (flowable fill) or other product incorporating fly ash, other coal combustion byproduct, or other waste.

C. Temporary abandonment. A temporarily abandoned well shall be sealed with a water-tight cap or well head seal. Such a well shall be maintained so that it will not be a source or channel for contamination to ground water groundwater during temporary abandonment.

C. D. Permanent abandonment. The object of proper permanent abandonment is to prevent contamination from reaching ground water groundwater resources via a component of the well, including casing, annular space, and well cap. Permanently abandoned wells, with the exception of bored wells abandoned per the methods identified in subdivisions 5 a and 5 b (3) of this subsection shall no longer be classified as wells. A permanently abandoned well shall be abandoned in the following manner:

1. All casing Casing material may be salvaged.

2. Before the well is plugged abandoned, it shall be checked from land surface to the entire depth of the well to ascertain freedom from obstructions that may interfere with plugging (sealing) abandonment operations.

3. The well shall be thoroughly chlorinated using the dosage rates in 12VAC5-630-430 prior to plugging (sealing) abandonment.

4. Grout used in well abandonment shall conform to 12VAC5-630-400 E.

5. Bored wells, rock or brick-lined, and uncased wells shall be abandoned using one of the following methods:

a. Clean fill method. Bored, rock or brick-lined, and uncased wells abandoned by this method shall remain designated as wells with respect to the siting of onsite sewage treatment system components per the requirements of 12VAC5-610 and 12VAC5-613. The well shall be backfilled with clean fill to the water level. A two-foot-thick bentonite plug shall be placed immediately above the water level. Clean fill shall be placed on top of the bentonite plug and brought up to at least five feet from the ground surface. The top five feet of the well casing, if present, shall be removed from the bore hole. If an open annular space is present around the well casing, the annular space shall be filled with grout to the maximum depth possible, but not less than or equal to 20 feet. A one-foot-thick cement or bentonite grout plug that completely fills the bore void space shall be placed a minimum of five feet from the ground surface. The remaining space shall be filled with clean fill which is mounded a minimum of one foot above the surrounding ground surface. Bored wells or uncased wells abandoned in this manner shall be treated as wells with respect to determining the minimum separation distance to sources of contamination listed in Table 3.1. When the well is fewer than 25 feet deep, this procedure shall be followed to the greatest extent possible, including removing at a minimum the top five feet of casing below ground and grouting the open annular space as described in this subdivision. The location of these wells shall be permanently marked for future location reference.

5. Wells b. Grout abandonment method. Bored, rock or brick-lined, and uncased wells abandoned by this method shall no longer be designated as wells, with the exception of subdivision 5 b (3) of this subsection. At a minimum, the top five feet of well casing below ground, if present, shall be removed from the well bore.

(1) When a continuous annular space is present around the well casing, the annular space shall be filled with grout, placed via a tremie pipe, to the maximum depth possible, but not less than 20 feet.

(2) When an annular space is present but not continuous, materials shall be completely removed from the annular space to the maximum depth possible, but not less than 20 feet, and the annular space shall be filled with grout placed via a tremie pipe.

(3) When an annular space is present but not continuous, and cannot be cleared sufficiently for the annular space to be filled with grout to a depth not less than 20 feet, then accessible annular space will be filled with grout placed via a tremie pipe. Wells in which the annular space cannot be filled with grout to depth of at least 20 feet shall be treated as a well with respect to the siting of onsite sewage treatment components per the requirements of 12VAC5-610 and 12VAC5-613.

(4) If existing well documentation (uniform water well completion report) indicates that the annular space is filled with grout to a minimum depth of 20 feet, the condition of the grout shall be confirmed by visual observation of the top of the grout following the removal of the top five feet of well casing below ground. If the grout appears intact, no further confirmation of grout condition shall be required and abandonment shall proceed. If the grout condition appears compromised based on visual examination, then the requirements of subdivision 5 b (2) or 5 b (3) of this subsection shall apply.

(5) Once the annular space is addressed, the well shall be pumped dry and completely filled with grout poured from the surface. If the well is not pumped dry, grout shall be placed by introduction through a tremie pipe. The placement of grout in the well bore shall completely fill the bore void space to within a minimum of five feet from the ground surface. The well shall be capped with clean fill which is mounded a minimum of one foot above the surrounding ground surface. When the well is fewer than 25 feet deep, this procedure shall be followed to the greatest extent possible, including removing at a minimum the top five feet of casing below ground and cleaning or grouting the open annular space as described in this subdivision.

6. Drilled wells, including observation, monitoring, and remediation wells constructed in collapsing material shall be completely filled with grout or clay slurry by introduction through placed via a tremie pipe initially extending to the bottom of the well. Such pipe shall be raised, but remain submerged in grout, as the well is filled. 6. Wells The well shall be capped with clean fill mounded to a minimum of one foot above the surrounding ground surface and graded to provide positive drainage away from the well.

7. Drilled wells, including observation, monitoring, and remediation wells, constructed in consolidated rock formations or which penetrate zones of consolidated rock shall be completely filled with grout placed via a tremie pipe. At the discretion of the water well service provider, the well may be filled with sand or gravel opposite the zones of consolidated rock. The top of the sand or gravel fill shall be at least five feet below the top of the consolidated rock and at least 20 feet below the land surface. The remainder of the well shall be filled with grout or clay slurry placed via a tremie pipe. The well shall be capped with clean fill mounded to a minimum of one foot above the surrounding ground surface and graded to provide positive drainage away from the well.

7. 8. Other abandonment procedures may be approved by the division on a case by case basis.

8. Test and exploration wells shall be abandoned in such a manner to prevent the well from being a channel for the vertical movement of water or a source of contamination to ground water.

9. When bored wells are bored advanced and a water source is not found, and the casing has not been placed in the bore hole, the well bore hole may shall be abandoned by backfilling with the bore spoils cuttings or clean fill or both to at least five feet below the ground surface. A two-feet-thick bentonite grout plug of grout shall be placed at a minimum of five feet from the ground surface. The remainder of the bore hole shall be filled with the bore spoils cuttings or clean fill or both.

12VAC5-630-460. Water system yields for residential use wells.

A. All drinking Drinking water systems that utilize one or more Class III wells shall be capable of supplying water in adequate quantity for the intended usage. All such systems, with Systems with a capacity less than under three gallons per minute, shall have a capacity ability to produce and store 150 gallons per bedroom per day and be capable of delivering a sustained flow of five gallons per minute per connection for 10 minutes for ordinary residential use. Systems with a capacity of three gallons per minute or more do not require additional storage.

B. The certified water well systems provider shall certify the storage capacity and the yield of the well on the Uniform Water Well Completion Report.

12VAC5-630-470. Chlorination dosage rates. (Repealed.)

Casing Diameter (Inches)	Volume per 100 Feet (Gallons)	70% Sodium Hypochlorite (Oz. Dry Wt.)	5% Sodium Hypochlorite (Liquid Meas.)
2	16	0.5	4 oz.
4	65	2	18 oz.
6	147	4	40 oz.
8	261	6	4.25 pts.
10	408	8	7 pts.
12	588	12	10 pts.
16	1045	20	2 gal.
20	1632	32	3.3 gal.
24	2350	48	4.67 gal.
30	3672	70	7.3 gal.
36	5288	101	10.5 gal.

12VAC5-630-480. Well casing specifications. (Repealed.)

Steel Casings
Nom. Size (inches)	Weight (lbs./ft.)	Thickness (inches)	External Diameter	Internal Diameter
4	10.79	.188	4.5	4.026
6	13.00	.188	6.625	6.25
8	24.70	.277	8.625	8.071
10	31.20	.279	10.75	10.192

FORMS (12VAC5-630)

Application for Sewage System - Water Supply, AOSE Form D (rev. 7/2007).

Application for Express Class IV Well Construction Permit.

Record of Inspection - Private Water Supply System.

Uniform Water Well Completion Report.

Uniform Water Well Completion Form, GW-2 (eff. 8/2016)

Registration Statement for Express Geothermal Well Permit (eff. 6/2012).

DOCUMENTS INCORPORATED BY REFERENCE (12VAC5-630)

NSF International, P.O. Box 130140, 789 N. Dixboro Road, Ann Arbor, MI 48105 (http://www.nsf.org/):

NSF/ANSI/CAN Standard 60-2020 Drinking Water Treatment Chemicals - Health Effects, 2020

NSF/ANSI/CAN Standard 61-2021 Drinking Water System Components - Health Effects, 2021

NSF/ANSI/CAN Standard 372-2020 Drinking Water System Components - Lead Content, 2020

NSF/ANSI/CAN Standard 600-2021 Health Effects Evaluation and Criteria for Chemicals in Drinking Water, 2021

NSF/ANSI/CAN Standard 600-2021 Addendum, Health Effects Evaluation and Criteria for Chemicals in Drinking Water, 2021