1,1,1,2-Tetrachloroethane
Lake Houston Storage
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
8
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 | 1 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 1 | 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 |
|---|---|---|
| 2018-03-19 | AE18862 | ND |
| 2019-05-14 | AE66266 | ND |
| 2020-08-31 | AF25836 | ND |
| 2021-10-20 | AF74194 | ND |
| 2022-06-17 | AG01485 | ND |
| 2022-09-23 | AG14806 | ND |
| 2022-10-19 | AG17640 | ND |
| 2023-10-09 | AG58923 | ND |