1,1,2,2-Tetrachloroethane
El Oso Water Supply Corporation
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.
15
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 4 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 2 | 0 | ND |
| 2023 | ND | 3 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
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
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-01-24 | AE10200 | ND |
| 2018-01-24 | AE10234 | ND |
| 2019-02-19 | AE54844 | ND |
| 2019-02-19 | AE54850 | ND |
| 2020-06-09 | AF14659 | ND |
| 2020-06-09 | AF14661 | ND |
| 2020-09-11 | AF27359 | ND |
| 2020-11-13 | AF34597 | ND |
| 2021-01-26 | AF41115 | ND |
| 2021-01-26 | AF41117 | ND |
| 2022-03-10 | AF88679 | ND |
| 2022-03-10 | AF88683 | ND |
| 2023-02-16 | AG29365 | ND |
| 2023-02-16 | AG29367 | ND |
| 2023-03-29 | AG34750 | ND |