1,1,1,2-Tetrachloroethane
Crawford County Water System
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
12
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 | 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
| Date | Lab ID | Result |
|---|---|---|
| 2018-03-07 | AJ85203 | ND |
| 2018-03-07 | AJ85204 | ND |
| 2019-03-19 | AK13597 | ND |
| 2019-03-19 | AK13598 | ND |
| 2020-03-31 | AK43983 | ND |
| 2020-03-31 | AK43984 | ND |
| 2021-04-12 | AK72841 | ND |
| 2021-04-12 | AK72842 | ND |
| 2022-03-22 | AK97694 | ND |
| 2022-03-22 | AK97695 | ND |
| 2023-09-05 | AL42616 | ND |
| 2023-09-05 | AL42617 | ND |