1,1,1,2-Tetrachloroethane
Crowley II Acre Subdivision
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
10
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 | N/A | 0 | 0 | N/A |
| 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 |
|---|---|---|
| 2019-05-29 | Q1930464002 | ND |
| 2019-05-29 | Q1930464004 | ND |
| 2020-10-26 | Q2041544001 | ND |
| 2020-10-26 | Q2041544003 | ND |
| 2021-12-13 | Q2134978003 | ND |
| 2021-12-13 | Q2134978005 | ND |
| 2022-11-30 | Q2235596002 | ND |
| 2022-11-30 | Q2235596004 | ND |
| 2023-03-13 | Q2309636002 | ND |
| 2023-03-13 | Q2309636007 | ND |