1,1,1,2-Tetrachloroethane
El Monte Water Department
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 | 1 | 0 | ND |
2016 | ND | 2 | 0 | ND |
2017 | ND | 2 | 0 | ND |
2018 | ND | 2 | 0 | ND |
2019 | ND | 5 | 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 |
---|---|---|
2014-01-28 | 9588-006-1035 | ND |
2014-07-28 | 9588-009-1030 | ND |
2015-01-13 | 9588-006-1015 | ND |
2016-01-11 | 9588-006-1045 | ND |
2016-07-07 | 9588-009-0950 | ND |
2017-01-30 | 9588-006-1350 | ND |
2017-08-03 | 9588-009-0945 | ND |
2018-01-25 | 9588-006-1130 | ND |
2018-07-25 | 9588-009-1300 | ND |
2019-01-31 | 9588-006-1050 | ND |
2019-05-28 | 9588-043-1310 | ND |
2019-05-28 | 9588-044-1240 | ND |
2019-05-28 | 9588-045-1255 | ND |
2019-07-25 | 9588-009-1430 | ND |