1,1,1,2-Tetrachloroethane
California Water Service Company-Lancaster
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
10
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
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 | 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 |
|---|---|---|
| 2014-05-20 | 5701-001-1000 | ND |
| 2014-06-24 | 5701-005-1112 | ND |
| 2015-05-19 | 5701-001-0937 | ND |
| 2015-06-16 | 5701-005-1347 | ND |
| 2016-05-24 | 5701-001-1342 | ND |
| 2016-06-28 | 5701-005-1145 | ND |
| 2017-05-09 | 5701-001-1025 | ND |
| 2017-06-20 | 5701-005-1501 | ND |
| 2018-05-08 | 5701-001-1310 | ND |
| 2019-06-04 | 5701-001-1319 | ND |