cis-1,2-Dichloroethylene
Terrell County Water Control and Improvement District 1
1,2-Dichloroethylene, a neurotoxic solvent, exists in two different forms: trans-1,2-dichloroethylene and cis-1,2-dichloroethylene. A mixture of the two forms is used to manufacture other solvents and chemical products.
12
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 | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 2 | 0 | ND |
| 2023 | ND | 2 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EPA Maximum Contaminant
Level (MCL): 70 ppb
The legal limit for cis-1,2-dichloroethylene, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1980s.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-08-22 | AE38149 | ND |
| 2018-08-22 | AE38153 | ND |
| 2019-05-09 | AE65705 | ND |
| 2019-05-09 | AE65707 | ND |
| 2020-09-17 | AF27757 | ND |
| 2020-09-17 | AF27759 | ND |
| 2021-07-20 | AF62667 | ND |
| 2021-07-20 | AF62673 | ND |
| 2022-05-19 | AF97762 | ND |
| 2022-05-19 | AF97768 | ND |
| 2023-09-20 | AG57080 | ND |
| 2023-09-20 | AG57086 | ND |