1,1,1,2-Tetrachloroethane
Dripping Springs Water Supply Corporation
NOTE: Dripping Springs Water Supply Corporation purchases water from West Travis County Regional WS which is required to test for 1,1,1,2-tetrachloroethane. Sample information shown below was taken by West Travis County Regional WS.
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
Samples
Samples exceeding legal limit (MCL)
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 | 1 | 0 | ND |
| 2020 | ND | 1 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 1 | 0 | ND |
| 2023 | ND | 1 | 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
NOTE: Dripping Springs Water Supply Corporation purchases water from West Travis County Regional WS which is required to test for 1,1,1,2-tetrachloroethane. Sample information shown below was taken by West Travis County Regional WS.
| Date | Lab ID | Result |
|---|---|---|
| 2018-07-23 | AE34161 | ND |
| 2019-08-21 | AE79918 | ND |
| 2020-07-20 | AF19804 | ND |
| 2021-08-11 | AF65765 | ND |
| 2022-08-11 | AG08908 | ND |
| 2023-12-12 | AG66339 | ND |