1,1,1,2-Tetrachloroethane
Carroll Water Supply Corporation Well 3
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 | 1 | 0 | ND |
2015 | ND | 1 | 0 | ND |
2016 | ND | 1 | 0 | ND |
2017 | ND | 1 | 0 | ND |
2018 | ND | 1 | 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 |
---|---|---|
2014-08-06 | Q1434206005 | ND |
2015-10-20 | Q1541116001 | ND |
2016-07-26 | Q1630367004 | ND |
2017-10-18 | Q1753868002 | ND |
2018-04-04 | Q1814033002 | ND |
2019-03-21 | Q1911826003 | ND |
2019-06-05 | Q1932253001 | ND |