1,1,1,2-Tetrachloroethane
Halfway Water Supply Corporation
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 | 3 | 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 |
---|---|---|
2014-02-04 | Q1403564001 | ND |
2014-06-26 | Q1424208002 | ND |
2014-09-03 | Q1441295002 | ND |
2015-04-23 | Q1515199002 | ND |
2016-03-17 | AD29325 | ND |
2016-09-08 | Q1636368001 | ND |
2016-09-08 | Q1636368003 | ND |
2017-11-14 | Q1758338002 | ND |
2017-11-14 | Q1758338008 | ND |
2018-05-17 | Q1820244002 | ND |
2018-05-17 | Q1820244004 | ND |
2019-04-11 | Q1914703002 | ND |
2019-04-11 | Q1914703004 | ND |