Section 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.

Historical Notes

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

Statutory Authority

§ 62.1-44.15 of the Code of Virginia.