1,1,1,2-Tetrachloroethane
California Water Service Company - Dixon
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
15
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 | 5 | 0 | ND |
| 2015 | ND | 1 | 0 | ND |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 3 | 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 |
|---|---|---|
| 2014-01-30 | 5701-007-1026 | ND |
| 2014-02-18 | 5701-008-1150 | ND |
| 2014-05-20 | 5701-017-1417 | ND |
| 2014-12-03 | 5701-002-1405 | ND |
| 2014-12-30 | 5810-004-1430 | ND |
| 2015-02-18 | 5701-006-0900 | ND |
| 2016-03-16 | 5701-002-1035 | ND |
| 2016-05-19 | 5701-017-1025 | ND |
| 2016-06-13 | 9590-020-1700 | ND |
| 2016-12-07 | 5810-002-1347 | ND |
| 2017-01-30 | 5701-002-0919 | ND |
| 2017-02-28 | 5701-008-0951 | ND |
| 2017-05-03 | 5701-017-1505 | ND |
| 2018-05-08 | 5701-017-1434 | ND |
| 2019-05-20 | 5701-017-1054 | ND |