1,1,1,2-Tetrachloroethane
Darboy Sanitary District 1
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 | 3 | 0 | ND |
2015 | ND | 1 | 0 | ND |
2016 | ND | 2 | 0 | ND |
2017 | ND | 2 | 0 | ND |
2018 | ND | 1 | 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 |
---|---|---|
2014-05-29 | 5027069A | ND |
2014-08-21 | 812171 | ND |
2014-08-21 | 812173 | ND |
2015-05-13 | 5028921X | ND |
2016-05-13 | 5031080A | ND |
2016-08-12 | 938807 | ND |
2017-08-24 | 1013489 | ND |
2017-08-24 | 1013493 | ND |
2018-05-25 | 5034705B | ND |
2019-08-14 | 1140949 | ND |