cis-1,2-Dichloroethylene
Walnut Springs
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.
11
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 | N/A | 0 | 0 | N/A |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 2 | 0 | ND |
| 2023 | ND | 3 | 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 |
|---|---|---|
| 2018-04-02 | AE20869 | ND |
| 2018-04-02 | AE20875 | ND |
| 2019-11-07 | AE88913 | ND |
| 2019-11-07 | AE88919 | ND |
| 2021-08-05 | AF65081 | ND |
| 2021-08-05 | AF65093 | ND |
| 2022-04-07 | AF92453 | ND |
| 2022-10-17 | AG17266 | ND |
| 2023-02-07 | AG27731 | ND |
| 2023-02-07 | AG27737 | ND |
| 2023-05-01 | AG38650 | ND |