1,1,1,2-Tetrachloroethane
City of Alvin
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 | 1 | 0 | ND |
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 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 |
---|---|---|
2014-02-10 | AC41924 | ND |
2015-01-22 | AC77353 | ND |
2015-01-22 | AC77351 | ND |
2015-01-22 | AC77341 | ND |
2016-01-11 | AD17322 | ND |
2016-01-11 | AD17348 | ND |
2016-01-11 | AD17334 | ND |
2017-01-09 | AD63623 | ND |
2017-01-09 | AD63627 | ND |
2017-01-09 | AD63637 | ND |
2018-02-20 | AE14451 | ND |
2018-02-20 | AE14455 | ND |
2018-02-20 | AE14457 | ND |
2019-02-25 | AE55657 | ND |
2019-02-25 | AE55647 | ND |
2019-02-25 | AE55645 | ND |