1,1,2,2-Tetrachloroethane
Town of Discovery Bay
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.
12
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 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | ND | 5 | 0 | ND |
| 2021 | ND | 7 | 0 | ND |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2020-05-26 | CA0710009_002_002-202005260820 | ND |
| 2020-05-26 | CA0710009_008_008-202005260920 | ND |
| 2020-05-26 | CA0710009_016_016-202005260900 | ND |
| 2020-05-27 | CA0710009_006_006-202005270920 | ND |
| 2020-05-27 | CA0710009_007_007-202005270830 | ND |
| 2021-04-05 | CA0710009_002_002-202104050935 | ND |
| 2021-04-05 | CA0710009_006_006-202104051010 | ND |
| 2021-04-05 | CA0710009_016_016-202104050852 | ND |
| 2021-04-20 | CA0710009_008_008-202104200950 | ND |
| 2021-04-21 | CA0710009_007_007-202104211150 | ND |
| 2021-05-27 | CA0710009_007_007-202105270830 | ND |
| 2021-05-27 | CA0710009_008_008-202105270900 | ND |