1,1,1,2-Tetrachloroethane
Somersworth Water Works
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 | 1 | 0 | ND |
2016 | ND | 1 | 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 |
---|---|---|
2014-05-19 | A402502001 | ND |
2014-08-28 | A407278002 | ND |
2015-09-24 | 1509-01918-001 | ND |
2016-08-18 | 1608-02223-001 | ND |
2017-05-16 | 1705-02095-001 | ND |
2017-08-08 | 1708-01179-001 | ND |
2018-09-18 | 1809-02394-001 | ND |
2019-08-27 | 1908-03784-001 | ND |