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 Virginia Register Volume 20, Issue 9, eff. February 12, 2004.