1,1,1,2-Tetrachloroethane
Hohenwald Water System
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
19
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 | 4 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 5 | 0 | ND |
| 2023 | ND | 6 | 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 | Result |
|---|---|
| 2018-01-11 | ND |
| 2018-03-27 | ND |
| 2018-06-26 | ND |
| 2018-10-18 | ND |
| 2019-01-09 | ND |
| 2019-07-10 | ND |
| 2021-08-12 | ND |
| 2021-12-15 | ND |
| 2022-01-28 | ND |
| 2022-01-28 | ND |
| 2022-08-26 | ND |
| 2022-08-26 | ND |
| 2022-11-10 | ND |
| 2023-02-09 | ND |
| 2023-05-09 | ND |
| 2023-08-08 | ND |
| 2023-08-08 | ND |
| 2023-08-21 | ND |
| 2023-11-07 | ND |