1,1,1,2-Tetrachloroethane
Mountain Regional Water Special Service District
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
50
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 | 13 | 0 | ND |
| 2020 | ND | 6 | 0 | ND |
| 2021 | ND | 5 | 0 | ND |
| 2022 | ND | 13 | 0 | ND |
| 2023 | ND | 8 | 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 |
|---|---|
| 2018-03-20 | ND |
| 2018-06-06 | ND |
| 2018-06-20 | ND |
| 2018-08-23 | ND |
| 2018-09-05 | ND |
| 2019-01-03 | ND |
| 2019-01-03 | ND |
| 2019-01-03 | ND |
| 2019-01-03 | ND |
| 2019-01-24 | ND |
| 2019-01-24 | ND |
| 2019-01-24 | ND |
| 2019-02-25 | ND |
| 2019-02-25 | ND |
| 2019-02-25 | ND |
| 2019-03-20 | ND |
| 2019-04-18 | ND |
| 2019-11-14 | ND |
| 2020-03-02 | ND |
| 2020-07-14 | ND |
| 2020-07-14 | ND |
| 2020-09-21 | ND |
| 2020-12-04 | ND |
| 2020-12-30 | ND |
| 2021-03-16 | ND |
| 2021-06-03 | ND |
| 2021-06-08 | ND |
| 2021-08-04 | ND |
| 2021-12-08 | ND |
| 2022-02-17 | ND |
| 2022-02-17 | ND |
| 2022-02-17 | ND |
| 2022-02-17 | ND |
| 2022-05-04 | ND |
| 2022-05-05 | ND |
| 2022-05-05 | ND |
| 2022-05-05 | ND |
| 2022-08-04 | ND |
| 2022-09-07 | ND |
| 2022-12-06 | ND |
| 2022-12-06 | ND |
| 2022-12-07 | ND |
| 2023-03-16 | ND |
| 2023-06-21 | ND |
| 2023-09-21 | ND |
| 2023-11-06 | ND |
| 2023-11-06 | ND |
| 2023-11-06 | ND |
| 2023-12-11 | ND |
| 2023-12-11 | ND |