1,1,1,2-Tetrachloroethane
Galveston County Water Control and Improvement District 8
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 | 4 | 0 | ND |
2015 | ND | 2 | 0 | ND |
2016 | ND | 1 | 0 | ND |
2017 | ND | 1 | 0 | ND |
2018 | ND | 2 | 0 | ND |
2019 | ND | 1 | 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 |
---|---|---|
2014-02-27 | AC45085 | ND |
2014-05-28 | AC55339 | ND |
2014-08-13 | AC63441 | ND |
2014-11-20 | AC72687 | ND |
2015-01-27 | AC77967 | ND |
2015-06-02 | AC94162 | ND |
2016-03-23 | AD30141 | ND |
2017-02-07 | AD69218 | ND |
2018-03-19 | AE18872 | ND |
2018-03-19 | AE18882 | ND |
2019-02-04 | AE52698 | ND |