1,1,1,2-Tetrachloroethane
South Grayson Special Utility District
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
34
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 | 6 | 0 | ND |
| 2019 | ND | 5 | 0 | ND |
| 2020 | ND | 5 | 0 | ND |
| 2021 | ND | 5 | 0 | ND |
| 2022 | ND | 8 | 0 | ND |
| 2023 | ND | 5 | 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 |
|---|---|---|
| 2018-02-06 | Q1804974001 | ND |
| 2018-05-04 | Q1818259004 | ND |
| 2018-10-15 | Q1840862007 | ND |
| 2018-10-15 | Q1840862009 | ND |
| 2018-10-15 | Q1840862011 | ND |
| 2018-10-15 | Q1840862013 | ND |
| 2019-08-13 | Q1954236016 | ND |
| 2019-08-13 | Q1954236018 | ND |
| 2019-08-13 | Q1954236014 | ND |
| 2019-08-13 | Q1954236012 | ND |
| 2019-08-13 | Q1954236010 | ND |
| 2020-08-06 | Q2031194009 | ND |
| 2020-08-06 | Q2031194011 | ND |
| 2020-08-06 | Q2031194013 | ND |
| 2020-08-06 | Q2031194015 | ND |
| 2020-08-06 | Q2031194017 | ND |
| 2021-11-10 | Q2131631012 | ND |
| 2021-11-10 | Q2131631018 | ND |
| 2021-11-10 | Q2131631016 | ND |
| 2021-11-10 | Q2131631014 | ND |
| 2021-11-10 | Q2131631010 | ND |
| 2022-02-08 | Q2204251002 | ND |
| 2022-04-26 | Q2212466007 | ND |
| 2022-04-26 | Q2212466009 | ND |
| 2022-04-26 | Q2212466011 | ND |
| 2022-04-26 | Q2212466013 | ND |
| 2022-04-26 | Q2212466015 | ND |
| 2022-08-17 | Q2224360001 | ND |
| 2022-10-19 | Q2231831001 | ND |
| 2023-05-16 | Q2318439007 | ND |
| 2023-05-16 | Q2318439009 | ND |
| 2023-05-16 | Q2318439011 | ND |
| 2023-05-16 | Q2318439013 | ND |
| 2023-05-16 | Q2318439015 | ND |