1,1,1,2-Tetrachloroethane
Talley Water Supply Corporation
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 |
|---|---|---|
| 2018-07-25 | Q1829519008 | ND |
| 2018-07-25 | Q1829519011 | ND |
| 2019-05-06 | Q1920205001 | ND |
| 2019-05-06 | Q1920205003 | ND |
| 2020-03-16 | Q2010542001 | ND |
| 2020-03-16 | Q2010542003 | ND |
| 2021-12-07 | Q2134174008 | ND |
| 2021-12-07 | Q2134174010 | ND |
| 2022-10-31 | Q2232959007 | ND |
| 2022-10-31 | Q2232959009 | ND |
| 2023-09-21 | Q2340992001 | ND |
| 2023-09-21 | Q2340992003 | ND |