The following drinking water standards, exclusive of the eight volatile chemicals, are maximum contaminant levels contained in the Commonwealth of Virginia/State Board of Health, “Waterworks Regulations, “Section 4, Tables 4.1 and 4.2 and Appendix B. The eight volatile organic chemicals (VOC's) are based on maximum contaminant levels promulgated as a final rule by the United States Environmental Protection Agency in the July 8, 1987, Federal Register, pp. 25689-25717.
INORGANIC CHEMICALS
Substance | Primary Maximum Contaminant Level (mg/l) |
Substance | Primary Maximum Contaminant Level (mg/l) |
Arsenic (As) | 0.05 |
Barium (Ba) | 1.0 |
Cadmium (Cd) | 0.010 |
Chromium (Cr) | 0.05 |
Fluoride (F) | 1.8 |
Lead (Pb) | 0.05 |
Mercury (Hg) | 0.002 |
Nitrate (as N) | 10.0 |
Selenium (Se) | 0.01 |
Silver (Ag) | 0.05 |
Substance | Secondary Maximum Contaminant Level (mg/l) |
Substance | Secondary Maximum Contaminant Level (mg/l) |
Chloride (Cl) | 250.0 |
Copper (Cu) | 1.0 |
Corrosivity | Non-Corrosive |
Foaming Agents | 0.5 * |
Iron (Fe) | 0.3 |
Manganese (Mn) | 0.05 |
Sulfate (SO4) | 250.0 |
Zinc (Zn) | 5.0 |
* Note: Concentration reported in terms of Methylene Blue Active Substances.
ORGANIC CHEMICALS
Substance | Primary Maximum Contaminant Level (mg/l) |
Substance | Primary Maximum Contaminant Level (mg/l) |
Chlorinated Hydrocarbon Insecticides | |
Endrin | 0.0002 |
Lindane | 0.004 |
Methoxychlor | 0.1 |
Toxaphene | 0.005 |
Chlorophenoxy Herbicides | |
2, 4-Dichlorophenoxyacetic Acid (2, 4-D) | 0.1 |
2, 4, 5-Trichlorophenoxypropionic Acid (2, 4, 5-TP or Silvex) | 0.01 |
Volatile Organic Chemicals (VOC's) | |
Benzene | 0.005 |
Vinyl Chloride | 0.002 |
Carbon Tetrachloride | 0.005 |
1, 2-Dichloroethane | 0.005 |
Trichloroethylene | 0.005 |
1, 1-Dichloroethylene | 0.007 |
1, 1, 1- Trichloroethane | 0.20 |
Para-Dichlorobenzene | 0.075 |
(Ord. 88-14. Passed 9-19-88; Ord. 10-02. Passed 2-17-10; Ord. 10-05. Passed 5-4-10.)