1,1,1,2-Tetrachloroethane
Stanislaus Regional Water Authority
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
8
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 |
|---|---|---|---|---|
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 1 | 0 | ND |
| 2023 | N/A | 0 | 0 | N/A |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
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 |
|---|---|---|
| 2018-09-12 | CA5010043_001_001-201809120915 | ND |
| 2019-03-14 | CA5010043_001_001-201903140900 | ND |
| 2019-09-19 | CA5010043_001_001-201909191030 | ND |
| 2020-04-16 | CA5010043_001_001-202004160830 | ND |
| 2020-09-17 | CA5010043_001_001-202009170900 | ND |
| 2021-03-18 | CA5010043_001_001-202103180820 | ND |
| 2021-09-16 | CA5010043_001_001-202109160830 | ND |
| 2022-04-11 | CA5010043_001_001-202204110930 | ND |