1,1,1,2-Tetrachloroethane
Walnut Springs
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
11
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 | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 2 | 0 | ND |
| 2023 | ND | 3 | 0 | ND |
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 |
|---|---|---|
| 2018-04-02 | AE20869 | ND |
| 2018-04-02 | AE20875 | ND |
| 2019-11-07 | AE88913 | ND |
| 2019-11-07 | AE88919 | ND |
| 2021-08-05 | AF65081 | ND |
| 2021-08-05 | AF65093 | ND |
| 2022-04-07 | AF92453 | ND |
| 2022-10-17 | AG17266 | ND |
| 2023-02-07 | AG27731 | ND |
| 2023-02-07 | AG27737 | ND |
| 2023-05-01 | AG38650 | ND |