1,1,1,2-Tetrachloroethane
Golden State Water Company - Cowan Heights
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 | 2 | 0 | ND |
2018 | ND | 2 | 0 | ND |
2019 | ND | 4 | 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 |
---|---|---|
2014-02-19 | 4417-001-0940 | ND |
2014-02-19 | 4417-004-0925 | ND |
2015-02-02 | 4417-001-0830 | ND |
2015-02-02 | 4417-004-0850 | ND |
2016-01-19 | 4417-001-0835 | ND |
2016-01-19 | 4417-004-0850 | ND |
2017-01-10 | 4417-001-0925 | ND |
2017-01-10 | 4417-004-0940 | ND |
2018-01-08 | 4417-001-0930 | ND |
2018-01-08 | 4417-004-0905 | ND |
2019-03-25 | 4417-001-0855 | ND |
2019-03-25 | 4417-004-0840 | ND |
2019-04-17 | 4417-004-1000 | ND |
2019-04-17 | 4417-004-1005 | ND |