1,1,1,2-Tetrachloroethane
Pennichuck 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 |
---|---|---|---|---|
2014 | ND | 2 | 0 | ND |
2015 | ND | 2 | 0 | ND |
2016 | ND | 2 | 0 | ND |
2017 | ND | 2 | 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 |
---|---|---|
2014-08-07 | 1408-00208-001 | ND |
2014-09-22 | 1409-01461-001 | ND |
2015-07-09 | 1507-00792-001 | ND |
2015-09-16 | 1509-01287-001 | ND |
2016-07-18 | 1607-01781-001 | ND |
2016-09-07 | 1609-00701-001 | ND |
2017-07-20 | 1707-02341-001 | ND |
2017-09-06 | 1709-00673-001 | ND |
2018-07-12 | 1807-01403-001 | ND |
2018-09-17 | 1809-02211-001 | ND |
2019-07-17 | 1907-02592-001 | ND |
2019-08-27 | 1908-03725-001 | ND |