1,1,1,2-Tetrachloroethane
City of West
NOTE: City of West purchases water from City of Waco which is required to test for 1,1,1,2-tetrachloroethane. Sample information shown below was taken by City of Waco.
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 | 3 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 2 | 0 | ND |
| 2023 | ND | 2 | 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: City of West purchases water from City of Waco which is required to test for 1,1,1,2-tetrachloroethane. Sample information shown below was taken by City of Waco.
| Date | Lab ID | Result |
|---|---|---|
| 2018-07-19 | AE33959 | ND |
| 2018-07-19 | AE33981 | ND |
| 2019-07-23 | AE75565 | ND |
| 2019-07-23 | AE75567 | ND |
| 2020-02-05 | AE97085 | ND |
| 2020-08-04 | AF21834 | ND |
| 2020-08-04 | AF21836 | ND |
| 2021-07-21 | AF62957 | ND |
| 2021-07-21 | AF62959 | ND |
| 2022-07-06 | AG03334 | ND |
| 2022-07-06 | AG03338 | ND |
| 2023-08-02 | AG51088 | ND |
| 2023-08-02 | AG51114 | ND |