1,1,2,2-Tetrachloroethane
Northwest Harris County MUD 5
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.
19
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 | 1 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 4 | 0 | ND |
| 2018 | ND | 4 | 0 | ND |
| 2019 | ND | 4 | 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 |
|---|---|---|
| 2014-10-14 | AC69599 | ND |
| 2015-07-28 | AD01247 | ND |
| 2015-07-28 | AD01279 | ND |
| 2015-07-28 | AD01287 | ND |
| 2016-11-09 | AD57442 | ND |
| 2016-11-09 | AD57450 | ND |
| 2016-11-09 | AD57448 | ND |
| 2017-08-08 | AD92417 | ND |
| 2017-09-26 | AD98059 | ND |
| 2017-09-26 | AD98065 | ND |
| 2017-09-26 | AD98063 | ND |
| 2018-02-07 | AE12763 | ND |
| 2018-05-10 | AE25945 | ND |
| 2018-05-10 | AE25951 | ND |
| 2018-05-10 | AE25947 | ND |
| 2019-02-05 | AE52907 | ND |
| 2019-03-26 | AE59980 | ND |
| 2019-03-26 | AE59970 | ND |
| 2019-03-26 | AE59964 | ND |