1,1,2,2-Tetrachloroethane
Madera Valley Water Supply Corporation
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 | 3 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | ND | 3 | 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 |
|---|---|---|
| 2015-07-15 | Q1527576002 | ND |
| 2015-07-15 | Q1527576004 | ND |
| 2015-07-15 | Q1527576005 | ND |
| 2016-09-13 | Q1637766001 | ND |
| 2016-09-13 | Q1637766004 | ND |
| 2016-09-13 | Q1637766012 | ND |
| 2017-08-22 | Q1738095008 | ND |
| 2017-08-22 | Q1738095006 | ND |
| 2017-08-22 | Q1738095010 | ND |
| 2018-07-18 | Q1828958010 | ND |
| 2018-07-18 | Q1828958012 | ND |
| 2018-07-18 | Q1828958014 | ND |
| 2019-06-20 | Q1938291004 | ND |
| 2019-06-20 | Q1938291006 | ND |
| 2019-06-20 | Q1938291008 | ND |