1,1,1,2-Tetrachloroethane
Leagueville Water Supply Corporation
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
14
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 | 4 | 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 |
|---|---|---|
| 2018-10-15 | Q1840932002 | ND |
| 2018-10-15 | Q1840932004 | ND |
| 2019-07-15 | Q1944773004 | ND |
| 2019-07-15 | Q1944773006 | ND |
| 2020-07-08 | Q2026823005 | ND |
| 2020-07-08 | Q2026823007 | ND |
| 2021-06-17 | Q2115930002 | ND |
| 2021-12-15 | Q2135525002 | ND |
| 2022-07-19 | Q2220684007 | ND |
| 2022-07-19 | Q2220684009 | ND |
| 2023-06-22 | Q2324029006 | ND |
| 2023-06-22 | Q2324029016 | ND |
| 2023-08-29 | Q2337341001 | ND |
| 2023-11-20 | Q2349791001 | ND |