1,1,1,2-Tetrachloroethane
City Of Brazoria
NOTE: City Of Brazoria purchases water from Brazosport Water Authority which is required to test for 1,1,1,2-tetrachloroethane. Sample information shown below was taken by Brazosport Water Authority.
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
Samples
Samples exceeding legal limit (MCL)
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 | 3 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 1 | 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
NOTE: City Of Brazoria purchases water from Brazosport Water Authority which is required to test for 1,1,1,2-tetrachloroethane. Sample information shown below was taken by Brazosport Water Authority.
| Date | Lab ID | Result |
|---|---|---|
| 2018-07-12 | AE33163 | ND |
| 2019-07-08 | AE73438 | ND |
| 2020-08-26 | AF25689 | ND |
| 2021-08-16 | AF66462 | ND |
| 2022-09-07 | AG11875 | ND |
| 2023-08-24 | AG54042 | ND |
| 2023-11-13 | AG63369 | ND |