1,1,1,2-Tetrachloroethane
Lake Forest Utility District
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
13
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 | 3 | 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 |
|---|---|---|
| 2018-06-19 | AE30786 | ND |
| 2018-06-19 | AE30802 | ND |
| 2019-09-05 | AE82290 | ND |
| 2019-09-05 | AE82304 | ND |
| 2020-10-26 | AF31920 | ND |
| 2020-10-26 | AF31928 | ND |
| 2021-03-08 | AF45706 | ND |
| 2021-03-08 | AF45708 | ND |
| 2021-04-19 | AF50507 | ND |
| 2022-07-21 | AG05779 | ND |
| 2022-12-12 | AG21502 | ND |
| 2023-08-23 | AG53719 | ND |
| 2023-08-23 | AG53721 | ND |