1,1,2,2-Tetrachloroethane
San Antonio Water System Northeast
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.
13
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | ND | 1 | 0 | ND |
| 2015 | ND | 4 | 0 | ND |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 4 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
ppb = parts per billion
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
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-09-02 | AC65451 | ND |
| 2015-07-08 | AC98749 | ND |
| 2015-07-08 | AC98753 | ND |
| 2015-07-08 | AC98747 | ND |
| 2015-07-09 | AC98996 | ND |
| 2017-12-04 | AE06578 | ND |
| 2017-12-13 | AE07674 | ND |
| 2018-03-15 | AE18626 | ND |
| 2018-03-26 | AE19964 | ND |
| 2018-05-10 | AE25965 | ND |
| 2018-05-10 | AE25967 | ND |
| 2019-04-22 | AE63213 | ND |
| 2019-04-22 | AE63205 | ND |