1,1,1,2-Tetrachloroethane
Tom Green County Fresh Water Supply District 3
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 |
|---|---|---|
| 2018-02-21 | Q1807226003 | ND |
| 2018-05-10 | Q1819381005 | ND |
| 2019-02-28 | Q1908593002 | ND |
| 2019-02-28 | Q1908593004 | ND |
| 2020-05-20 | Q2020109003 | ND |
| 2020-05-20 | Q2020109005 | ND |
| 2021-05-19 | Q2113110007 | ND |
| 2021-05-19 | Q2113110009 | ND |
| 2022-05-19 | Q2214829001 | ND |
| 2022-05-19 | Q2214829003 | ND |
| 2023-05-18 | Q2318793007 | ND |
| 2023-05-18 | Q2318793009 | ND |