1,1,1,2-Tetrachloroethane
Rogersville Water System
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
25
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 | 5 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 5 | 0 | ND |
| 2022 | ND | 6 | 0 | ND |
| 2023 | ND | 7 | 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 |
|---|---|
| 2018-03-13 | ND |
| 2018-03-27 | ND |
| 2018-05-14 | ND |
| 2018-08-02 | ND |
| 2018-10-31 | ND |
| 2019-04-08 | ND |
| 2019-07-15 | ND |
| 2021-01-12 | ND |
| 2021-04-06 | ND |
| 2021-04-21 | ND |
| 2021-07-26 | ND |
| 2021-10-13 | ND |
| 2022-01-11 | ND |
| 2022-01-11 | ND |
| 2022-04-06 | ND |
| 2022-04-06 | ND |
| 2022-07-11 | ND |
| 2022-10-07 | ND |
| 2023-01-11 | ND |
| 2023-01-11 | ND |
| 2023-01-11 | ND |
| 2023-04-04 | ND |
| 2023-04-18 | ND |
| 2023-07-18 | ND |
| 2023-10-31 | ND |