1,1,1,2-Tetrachloroethane
Harlingen Water Works System
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 |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | ND | 2 | 0 | ND |
2015 | ND | 2 | 0 | ND |
2016 | ND | 3 | 0 | ND |
2017 | ND | 1 | 0 | ND |
2018 | ND | 2 | 0 | ND |
2019 | ND | 2 | 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 |
---|---|---|
2014-05-07 | AC53367 | ND |
2014-07-22 | AC60487 | ND |
2015-06-18 | AC96506 | ND |
2015-09-22 | AD08062 | ND |
2016-06-27 | AD41903 | ND |
2016-09-28 | AD52054 | ND |
2016-09-28 | AD52086 | ND |
2017-08-02 | AD91849 | ND |
2018-06-13 | AE29818 | ND |
2018-07-26 | AE34710 | ND |
2019-08-07 | AE77495 | ND |
2019-08-07 | AE77507 | ND |