1,1,1,2-Tetrachloroethane
Tryon Road Special Utility District
NOTE: Tryon Road Special Utility District purchases water from Northeast Texas Municipal Water District which is required to test for 1,1,1,2-tetrachloroethane. Sample information shown below was taken by Northeast Texas Municipal Water District.
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 | 3 | 0 | ND |
| 2019 | ND | 3 | 0 | ND |
| 2020 | ND | 3 | 0 | ND |
| 2021 | ND | 3 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 4 | 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: Tryon Road Special Utility District purchases water from Northeast Texas Municipal Water District which is required to test for 1,1,1,2-tetrachloroethane. Sample information shown below was taken by Northeast Texas Municipal Water District.
| Date | Lab ID | Result |
|---|---|---|
| 2018-09-20 | Q1837729001 | ND |
| 2019-08-14 | Q1954876001 | ND |
| 2020-04-23 | Q2016185003 | ND |
| 2020-08-18 | Q2032884003 | ND |
| 2021-02-09 | Q2103854003 | ND |
| 2022-03-01 | Q2206887005 | ND |
| 2023-01-18 | Q2302651002 | ND |