Virginia Administrative Code
Title 9 - ENVIRONMENT
Agency 25 - STATE WATER CONTROL BOARD
Chapter 280 - GROUND WATER STANDARDS
Section 9VAC25-280-40 - Ground water standards applicable statewide
Universal Citation: 9 VA Admin Code 25-280-40
Current through Register Vol. 41, No. 3, September 23, 2024
| 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 [MICRO]g/l | |
| Chlordane | 0.01 [MICRO]g/l | |
| DDT | 0.001 [MICRO]g/l | |
| Endrin | 0.004 [MICRO]g/l | |
| Heptachlor | 0.001 [MICRO]g/l | |
| Heptachlor Epoxide | 0.001 [MICRO]g/l | |
| Kepone | None | |
| Lindane | 0.01 [MICRO]g/l | |
| Methoxychlor | 0.03 [MICRO]g/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.
Disclaimer: These regulations may not be the most recent version. Virginia may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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