1,1,2,2-Tetrachloroethane
Northwest Grayson County Water Control and Improvement District 1
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.
15
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 | N/A | 0 | 0 | N/A |
| 2015 | ND | 2 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | ND | 5 | 0 | ND |
| 2019 | ND | 3 | 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 |
|---|---|---|
| 2015-07-22 | Q1528461002 | ND |
| 2015-07-22 | Q1528461003 | ND |
| 2016-11-03 | Q1647470001 | ND |
| 2016-11-03 | Q1647470007 | ND |
| 2017-11-14 | Q1758443009 | ND |
| 2017-11-14 | Q1758443006 | ND |
| 2017-12-12 | Q1765385003 | ND |
| 2018-02-21 | Q1807299003 | ND |
| 2018-05-29 | Q1821406001 | ND |
| 2018-09-10 | Q1835971002 | ND |
| 2018-11-19 | Q1847248001 | ND |
| 2018-11-19 | Q1847248009 | ND |
| 2019-03-06 | Q1909735005 | ND |
| 2019-03-06 | Q1909735007 | ND |
| 2019-03-06 | Q1909735002 | ND |