1,1,2,2-Tetrachloroethane
Harlingen Water Works System
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | ND | 2 | 0 | ND |
| 2015 | ND | 2 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 2 | 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 |
|---|---|---|
| 2014-05-07 | AC53367 | ND |
| 2014-07-22 | AC60487 | ND |
| 2015-06-18 | AC96506 | ND |
| 2015-09-22 | AD08062 | ND |
| 2016-06-27 | AD41903 | ND |
| 2016-09-28 | AD52054 | ND |
| 2016-09-28 | AD52086 | ND |
| 2017-08-02 | AD91849 | ND |
| 2018-06-13 | AE29818 | ND |
| 2018-07-26 | AE34710 | ND |
| 2019-08-07 | AE77495 | ND |
| 2019-08-07 | AE77507 | ND |