1,1,1,2-Tetrachloroethane
Jefferson County Water Control and Improvement District 10
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
9
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 | 1 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
| 2020 | ND | 1 | 0 | ND |
| 2021 | ND | 3 | 0 | ND |
| 2022 | ND | 2 | 0 | ND |
| 2023 | ND | 1 | 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 |
|---|---|---|
| 2018-01-31 | AE11563 | ND |
| 2019-02-21 | AE55356 | ND |
| 2020-02-13 | AE98437 | ND |
| 2021-05-24 | AF55157 | ND |
| 2021-07-19 | AF62432 | ND |
| 2021-11-18 | AF77134 | ND |
| 2022-01-12 | AF80004 | ND |
| 2022-04-12 | AF92929 | ND |
| 2023-01-09 | AG23456 | ND |