1,1,1,2-Tetrachloroethane
Big Lake
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
8
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 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | ND | 3 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 1 | 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 |
|---|---|---|
| 2020-07-08 | 20G0347-01 | ND |
| 2020-10-19 | 20J0959-01 | ND |
| 2020-10-19 | 20J0959-02 | ND |
| 2021-01-25 | 21A0728-01 | ND |
| 2021-04-07 | 21D0381-01 | ND |
| 2022-01-18 | 22A0632-01 | ND |
| 2023-02-02 | 23B0220-01 | ND |
| 2023-05-01 | 23E0134-02 | ND |