1,1,2,2-Tetrachloroethane
Dedham Westwood Water District
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.
35
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 |
|---|---|---|---|---|
| 2014 | ND | 6 | 0 | ND |
| 2015 | ND | 6 | 0 | ND |
| 2016 | ND | 6 | 0 | ND |
| 2017 | ND | 6 | 0 | ND |
| 2018 | ND | 5 | 0 | ND |
| 2019 | ND | 6 | 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 | Result |
|---|---|
| 2014-01-07 | ND |
| 2014-01-07 | ND |
| 2014-04-08 | ND |
| 2014-07-22 | ND |
| 2014-07-22 | ND |
| 2014-10-22 | ND |
| 2015-03-11 | ND |
| 2015-03-11 | ND |
| 2015-04-07 | ND |
| 2015-07-28 | ND |
| 2015-07-29 | ND |
| 2015-11-17 | ND |
| 2016-01-05 | ND |
| 2016-01-05 | ND |
| 2016-04-05 | ND |
| 2016-07-12 | ND |
| 2016-07-12 | ND |
| 2016-10-04 | ND |
| 2017-01-04 | ND |
| 2017-01-04 | ND |
| 2017-04-04 | ND |
| 2017-08-04 | ND |
| 2017-08-04 | ND |
| 2017-10-19 | ND |
| 2018-01-24 | ND |
| 2018-01-24 | ND |
| 2018-04-02 | ND |
| 2018-07-11 | ND |
| 2018-10-26 | ND |
| 2019-01-30 | ND |
| 2019-01-30 | ND |
| 2019-05-16 | ND |
| 2019-08-28 | ND |
| 2019-08-28 | ND |
| 2019-10-23 | ND |