Administrative Code

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Virginia Administrative Code
Title 9. Environment
Agency 25. State Water Control Board
Chapter 280. Ground Water Standards
7/8/2020

9VAC25-280-40. Ground Water Standards Applicable Statewide.

CONSTITUENT

CONCENTRATION

Sodium

270 mg/l

Foaming Agents as methylene blue active substances

0.05 mg/l

Petroleum hydrocarbons

1 mg/l

Arsenic

0.05 mg/l

Barium

1.0 mg/l

Cadmium

0.0004 mg/l

Chromium

0.05 mg/l

Copper

1.0 mg/l

Cyanide

0.005 mg/l

Lead

0.05 mg/l

Mercury

0.00005 mg/l

Phenols

0.001 mg/l

Selenium

0.01 mg/l

Silver

None

Zinc

0.05 mg/l

Chlorinated Hydrocarbon Insecticides

Aldrin/Dieldrin

0.003 μg/l

Chlordane

0.01 μg/l

DDT

0.001 μg/l

Endrin

0.004 μg/l

Heptachlor

0.001 μg/l

Heptachlor Epoxide

0.001 μg/l

Kepone

None

Lindane

0.01 μg/l

Methoxychlor

0.03 μg/l

Mirex

None

Toxaphene

None

Chlorophenoxy Herbicides

2,4‑D

0.1 mg/l

Silvex

0.01 mg/l

Radioactivity

Total Radium (Ra‑226 & Ra‑228)

5 pCi/1

Radium 226

3 pCi/1

Gross Beta Activity*

50 pCi/1

Gross Alpha Activity (excluding Radon & Uranium)

15 pCi/1

Tritium

20,000 pCi/l

Strontium‑90

8 pCi/l

Manmade Radioactivity ‑ Total Dose Equiv.**

4 mrem/yr

pCi/l = picoCurie per liter

mrem/yr = millirems per year

*The gross beta value shall be used as a screening value only. If exceeded, the water must be analyzed to determine the presence and quantity of radionuclides to determine compliance with the tritium, strontium, and manmade radioactivity standards.

**Combination of all sources should not exceed total dose equivalent of 4 mrem/year.

Statutory Authority

§ 62.1-44.15 of the Code of Virginia.

Historical Notes

Derived from Volume 20, Issue 09, eff. February 12, 2004.

Website addresses provided in the Virginia Administrative Code to documents incorporated by reference are for the reader's convenience only, may not necessarily be active or current, and should not be relied upon. To ensure the information incorporated by reference is accurate, the reader is encouraged to use the source document described in the regulation.

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