1,1,1,2-Tetrachloroethane
Atascosa Rural WSC
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | ND | 2 | 0 | ND |
2015 | ND | 2 | 0 | ND |
2016 | ND | 2 | 0 | ND |
2017 | ND | 4 | 0 | ND |
2018 | ND | 4 | 0 | ND |
2019 | ND | 3 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 1 ppb
The EWG Health Guideline of 1 ppb for 1,1,1,2-tetrachloroethane was defined by the Environmental Protection Agency as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.
ppb = parts per billion
All test results
Date | Lab ID | Result |
---|---|---|
2014-02-12 | AC42474 | ND |
2014-03-27 | AC48533 | ND |
2015-02-05 | AC79470 | ND |
2015-02-05 | AC79472 | ND |
2016-02-16 | AD23635 | ND |
2016-02-16 | AD23667 | ND |
2017-01-12 | AD64790 | ND |
2017-01-12 | AD64758 | ND |
2017-08-09 | AD92562 | ND |
2017-10-06 | AD99826 | ND |
2018-01-18 | AE09253 | ND |
2018-01-18 | AE09255 | ND |
2018-01-18 | AE09251 | ND |
2018-04-06 | AE21722 | ND |
2019-01-11 | AE49573 | ND |
2019-01-11 | AE49569 | ND |
2019-01-11 | AE49571 | ND |