VOCs in water pose a possible health risk because many of them are known carcinogens. Volatile organic chemicals are man-made, therefore the detection of any of them indicates that there has been a chemical spill or other incident. Volatile organic chemicals regulated under the Safe Drinking Water Act of 1986 are listed below.
Volatile Organic Chemicals - VOC in Water | US EPA MCL in mg/l |
| Trichloroethylene | 0.005 |
| Tetrachloroethylene | 0.005 |
| Carbon tetrachloride | 0.005 |
| 1,1,1-Trichloroethane | 0.2 |
| 1,2-Dichloroethane (ethylene dichloride) | 0.005 |
| Vinyl chloride | 0.002 |
| Methylene chloride (dichloromethane) | 0.002 |
| Benzene | 0.005 |
| Chlorobenzene | 0.1 |
| Dichlorobenzene | 0.6 |
| Trichlorobenzene | 0.07 |
| 1,1-Dichloroethylene | 0.007 |
| trans-1,2-Dichloroethylene | 0.1 |
| cis-1,2-Dichloroethylene | 0.07 |
