9VAC25-280-40. Ground water standards applicable statewide

CONSTITUENT CONCENTRATION CONSTITUENT CONCENTRATION Sodium 270 mg/l Sodium 270 mg/l Foaming Agents as methylene blue active substances 0.05 mg/l Foaming Agents as methylene blue active substances 0.05 mg/l Petroleum hydrocarbons 1 mg/l Petroleum hydrocarbons 1 mg/l Arsenic 0.05 mg/l Arsenic 0.05 mg/l Barium 1.0 mg/l Barium 1.0 mg/l Cadmium 0.0004 mg/l Cadmium 0.0004 mg/l Chromium 0.05 mg/l Chromium 0.05 mg/l Copper 1.0 mg/l Copper 1.0 mg/l Cyanide 0.005 mg/l Cyanide 0.005 mg/l Lead 0.05 mg/l Lead 0.05 mg/l Mercury 0.00005 mg/l Mercury 0.00005 mg/l Phenols 0.001 mg/l Phenols 0.001 mg/l Selenium 0.01 mg/l Selenium 0.01 mg/l Silver None Silver None Zinc 0.05 mg/l Zinc 0.05 mg/l Chlorinated Hydrocarbon Insecticides Chlorinated Hydrocarbon Insecticides Aldrin/Dieldrin 0.003 μg/l Aldrin/Dieldrin 0.003 μg/l Chlordane 0.01 μg/l Chlordane 0.01 μg/l DDT 0.001 μg/l DDT 0.001 μg/l Endrin 0.004 μg/l Endrin 0.004 μg/l Heptachlor 0.001 μg/l Heptachlor 0.001 μg/l Heptachlor Epoxide 0.001 μg/l Heptachlor Epoxide 0.001 μg/l Kepone None Kepone None Lindane 0.01 μg/l Lindane 0.01 μg/l Methoxychlor 0.03 μg/l Methoxychlor 0.03 μg/l Mirex None Mirex None Toxaphene None Toxaphene None Chlorophenoxy Herbicides Chlorophenoxy Herbicides 2,4‑D 0.1 mg/l 2,4‑D 0.1 mg/l Silvex 0.01 mg/l Silvex 0.01 mg/l Radioactivity Radioactivity Total Radium (Ra‑226 & Ra‑228) 5 pCi/1 Total Radium (Ra‑226 & Ra‑228) 5 pCi/1 Radium 226 3 pCi/1 Radium 226 3 pCi/1 Gross Beta Activity* 50 pCi/1 Gross Beta Activity* 50 pCi/1 Gross Alpha Activity (excluding Radon & Uranium) 15 pCi/1 Gross Alpha Activity (excluding Radon & Uranium) 15 pCi/1 Tritium 20,000 pCi/l Tritium 20,000 pCi/l Strontium‑90 8 pCi/l Strontium‑90 8 pCi/l Manmade Radioactivity ‑ Total Dose Equiv.** 4 mrem/yr Manmade Radioactivity ‑ Total Dose Equiv.** 4 mrem/yr pCi/l = picoCurie per liter mrem/yr = millirems per year 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.