1,1,2,2-Tetrachloroethane
Status: No national drinking water standard exists
1,1,2,2-Tetrachloroethane is an industrial chemical which has been used as a metal degreaser, and in paint, paint removers, mothballs and pesticides. It damages the liver and nervous system, and may cause cancer.
2017-2019:
2
states detected
13
utilities detected
17,378
people served
1
states over health guideline
8
utilities over health guideline
6,828
people served over health guideline
Health concerns for 1,1,2,2-tetrachloroethane
Cancer
Harm to the liver
Change to the central nervous system
Change to the stomach and intestines
State and national drinking water standards and health guidelines
EWG Health Guideline 0.1 ppb
The EWG Health Guideline of 0.1 ppb for 1,1,2,2-tetrachloroethane was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.
ppb = parts per billion
States reporting 1,1,2,2-tetrachloroethane in drinking water
| UTILITIES REPORTING ABOVE HEALTH GUIDELINES | UTILITIES WITH CONTAMINATION | ||||||
|---|---|---|---|---|---|---|---|
| State | Utilities | People Served | Utilities | People Served | |||
| New York | 8 | 6,828 | 12 | 10,978 | |||
| Ohio | 0 | 0 | 1 | 6,400 | |||
Filtering technologies that reduce 1,1,2,2-tetrachloroethane
Activated Carbon
Reverse Osmosis
Utilities with the highest amounts of 1,1,2,2-tetrachloroethane, 2017-2019
| Utility | Location | Tests | Average level | People served |
|---|---|---|---|---|
| Ausable Heights Water System | Keeseville, NY | 1 of 1 | 0.500 ppb | 46 |
| Hillcrest Water District | Brewster, NY | 1 of 70 | 0.343 ppb | 305 |
| Gardeau Water District | Castile, NY | 1 of 4 | 0.125 ppb | 60 |
| Perry Village* | , NY | 1 of 4 | 0.125 ppb | 4,348 |
| Perry Center Water District | Perry, NY | 1 of 4 | 0.125 ppb | 150 |
| Silver Lake Institute - Castile Water District #1 | , NY | 1 of 4 | 0.125 ppb | 440 |
| Pinewood Acres Water District | Corning, NY | 1 of 6 | 0.0833 ppb | 168 |
| South Corning Village* | Corning, NY | 1 of 6 | 0.0833 ppb | 1,568 |
| Springhill Mobile Home Park | Wappingers Falls, NY | 1 of 9 | 0.0556 ppb | 150 |
| Farm-to-market Associates | Brewster, NY | 1 of 9 | 0.0556 ppb | 48 |
| Union Springs Village* | Union Springs, NY | 1 of 24 | 0.0208 ppb | 3,000 |
| Springport Water District #1 - South | Cayuga, NY | 1 of 24 | 0.0208 ppb | 500 |
| Springport Water District #1 - North | Cayuga, NY | 1 of 24 | 0.0208 ppb | 500 |
| Wallingford Water Department | Wallingford, CT | 1 of 35 | 0.0143 ppb | 37,267 |
| Milford City Public Water System | Milford, OH | 1 of 57 | 0.00877 ppb | 6,400 |
* This water utility supplies finished drinking water to at least one other water utility. The purchasing utility is not required to test for or report 1,1,2,2-Tetrachloroethane, but it likely has the contaminant in its water supply.
| Utility | Location | Tests | Average level | People served |
|---|---|---|---|---|
| Wallingford Water Department | Wallingford, CT | 1 of 35 | 0.0143 ppb | 37,267 |