cis-1,2-Dichloroethylene
Highridge Water Authority
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.
14
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 | 4 | 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 |
|---|---|---|
| 2018-06-13 | 7054911001 | ND |
| 2018-06-13 | 7054911002 | ND |
| 2019-06-12 | 7093386001 | ND |
| 2019-06-12 | 7093386002 | ND |
| 2019-07-16 | 7097758001 | ND |
| 2019-07-16 | 7097758002 | ND |
| 2020-02-25 | 21769542.00 | ND |
| 2020-02-25 | 21769562.00 | ND |
| 2021-02-16 | 23985683.00 | ND |
| 2021-02-16 | 23985703.00 | ND |
| 2022-06-07 | 26956509.00 | ND |
| 2022-06-07 | 26956529.00 | ND |
| 2023-03-21 | 28626412.00 | ND |
| 2023-03-21 | 28626432.00 | ND |