9 Va. Admin. Code § 25-780-70

Current through Register Vol. 41, No. 4, October 8, 2024

Section 9VAC25-780-70 - Existing water source information

A. Each local government within the regional planning area shall provide existing water source information to assist in the development of the regional water supply plan. A regional water supply plan shall include current information on existing water sources within the regional planning area.

B. Each local government within the regional planning area shall provide existing water source information for community water systems using groundwater to assist in the development of the regional water supply plan. A regional water supply plan shall include, for community water systems using groundwater:

(i) the name and identification number of the well,

(ii) the well depth,

(iii) the casing depth,

(iv) the screen depth (top and bottom) or water zones,

(v) the well diameter,

(vi) the designed average daily withdrawal and maximum daily withdrawal,

(vii) the system capacity permitted by the Virginia Department of Health, and

(viii) the annual and monthly permitted amounts contained in ground water withdrawal permits for all wells located within ground water management areas.

C. Each local government within the regional planning area shall provide existing water source information for community water systems using surface water reservoirs to assist in the development of the regional water supply plan. A regional water supply plan shall include, for community water systems using surface water reservoirs:

(i) the name of the reservoirs,

(ii) the sub-basins in which the reservoirs are located,

(iii) the drainage area,

(iv) the amount of storage available for water supply,

(v) the designed average daily and maximum daily withdrawals from the reservoirs,

(vi) the safe yield of the reservoirs,

(vii) the capacity of any associated water treatment plant,

(viii) the Virginia Department of Health permitted capacity of the systems, and

(ix) any limitations on withdrawal established by permits issued by the department. For a community water system that operates a system of interconnected reservoirs, the information may be presented for the entire system or may be reported as subsets of the system, except that the plan must report the drainage area and amount of storage available for water supply from each reservoir independently. The plan shall designate which reservoirs and which intakes constitute a system for the purposes of this subsection.

D. Each local government within the regional planning area shall provide existing water source information for community water systems using stream intakes to assist in the development of the regional water supply plan. A regional water supply plan shall include, for community water systems using stream intakes:

(i) the name of the stream or river,

(ii) the drainage area of the intake,

(iii) the sub-basin in which the intake is located,

(iv) the designed average daily and designed maximum daily withdrawal from the stream,

(v) the safe yield,

(vi) the lowest daily flow of record,

(vii) the design capacity of the pump station,

(viii) the design capacity of the water treatment plant,

(ix) the capacity of the system permitted by the Virginia Department of Health, and

(x) any limitation on withdrawals established by permits issued by the department.

E. To assist the development of the regional water supply plan, each local government shall review the data provided by the department for self-supplied users of more than 300,000 gallons of surface water in any one month. Local governments shall review this information and provide information for any locally known withdrawals of more than 300,000 gallons in any one month not identified in the dataset provided. A regional water supply plan shall include for all self-supplied users of more than 300,000 gallons in any month of surface water for nonagricultural uses:

(i) the name of the water body utilized,

(ii) the designed average daily and maximum daily withdrawal, and

(iii) any limitation on withdrawals established by permits issued by the department, the Virginia Department of Health, or any other agency.

F. To assist the development of the regional water supply plan, each local government shall review the data provided by the department for self-supplied users of more than 300,000 gallons of groundwater in any one month. Local governments shall review this information and provide information for any locally known withdrawals of more than 300,000 gallons in any one month not identified in the dataset provided. A regional water supply plan shall include, for all self-supplied users of more than 300,000 gallons in any month of groundwater for nonagricultural uses:

(i) the name and identification number of the well,

(ii) the well depth,

(iii) the casing depth,

(iv) the screen depth (top and bottom) or water zones,

(v) the well diameter,

(vi) the designed average daily and maximum daily withdrawal and

(vii) any limitation on withdrawal established by permits issued by the department, the Virginia Department of Health, or any other agency.

G. To assist the development of the regional water supply plan, each local government shall review the data provided by the department for community water systems with existing contractual agreements to receive raw or finished water deliveries from another party. Local governments shall review this information and provide information for any locally known contractual agreements not identified in the dataset provided. A regional water supply plan shall include, for any community water systems with existing contractual agreements to receive raw or finished water deliveries from another party:

(i) the source of the water to be provided under the contract,

(ii) the amount of groundwater or surface water contractually available to be delivered to the community water system from a water supply system on a maximum daily and average annual basis,

(iii) any contractual limitations on the delivery of the water, including the term of any contract or agreement,

(iv) the recipients or areas served by the water purchased, and

(v) the name of any supplier.

H. A regional water supply plan, if practicable, shall include an estimate of the amount of water available to be purchased outside the planning area from any source with the capacity to withdraw more than 300,000 gallons in any month of surface water or groundwater, and that is not addressed by subsection G of this section.

I. To assist the development of the regional water supply plan, each local government shall review the data provided by the department related to agricultural users who utilize more than 300,000 gallons in any month. Local governments shall review this information and provide information for any locally known agricultural users of more than 300,000 gallons in any month not identified in the dataset provided. A regional water supply plan shall include, to the extent possible, (i) a list of agricultural users who utilize more than 300,000 gallons in any month, (ii) an estimate of total agricultural usage by source, (iii) whether the use is irrigation or nonirrigation, (iv) the maximum capacity of the intake or well, and (v) whether the source is surface water or groundwater.

J. To assist the development of the regional water supply plan, each local government shall provide an estimate of the number of residences and businesses that are self-supplied by individual wells withdrawing less than 300,000 gallons in any month and an estimate of the population served by individual wells. A regional water supply plan shall include an estimate of the number of residences and businesses that are self-supplied by individual wells withdrawing less than 300,000 gallons in any month and an estimate of the population served by individual wells.

9 Va. Admin. Code § 25-780-70

Derived from Virginia Register Volume 22, Issue 2, eff. November 2, 2005; Amended, Virginia Register Volume 39, Issue 5, eff. 11/23/2022; Amended, Virginia Register Volume 41, Issue 2, eff. 10/9/2024.

Statutory Authority: §§ 62.1-44.15 and 62.1-44.38:1 of the Code of Virginia.