1,1,1,2-Tetrachloroethane
City of Shallowater
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
13
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 | 1 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
| 2020 | ND | 1 | 0 | ND |
| 2021 | ND | 3 | 0 | ND |
| 2022 | ND | 5 | 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 |
|---|---|---|
| 2018-07-11 | Q1827381001 | ND |
| 2019-07-10 | Q1943529002 | ND |
| 2020-07-29 | Q2029645004 | ND |
| 2021-08-11 | Q2121480006 | ND |
| 2021-10-20 | Q2129605004 | ND |
| 2021-10-20 | Q2129605006 | ND |
| 2022-03-15 | Q2208766004 | ND |
| 2022-06-16 | Q2216858002 | ND |
| 2022-06-16 | Q2216858004 | ND |
| 2022-08-16 | Q2224095001 | ND |
| 2022-10-25 | Q2232134001 | ND |
| 2023-04-25 | Q2315528008 | ND |
| 2023-04-25 | Q2315528010 | ND |