cis-1,2-Dichloroethylene
Ridge Spring, Town of
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.
19
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 | 4 | 0 | ND |
| 2019 | ND | 4 | 0 | ND |
| 2020 | ND | 3 | 0 | ND |
| 2021 | ND | 4 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 1 | 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 |
|---|---|---|
| 2018-01-17 | AE06217 | ND |
| 2018-05-02 | AE11636 | ND |
| 2018-07-18 | AE15231 | ND |
| 2018-10-17 | AE19864 | ND |
| 2019-02-27 | AE26426 | ND |
| 2019-04-02 | AE28055 | ND |
| 2019-07-16 | AE33704 | ND |
| 2019-11-25 | AE40764 | ND |
| 2020-02-11 | AE44279 | ND |
| 2020-04-22 | AE47574 | ND |
| 2020-12-09 | AE58678 | ND |
| 2021-02-24 | AE61854 | ND |
| 2021-06-24 | AE67917 | ND |
| 2021-07-21 | AE69291 | ND |
| 2021-11-17 | AE75295 | ND |
| 2022-01-12 | AE77416 | ND |
| 2022-04-20 | AE82499 | ND |
| 2022-11-16 | AE93064 | ND |
| 2023-10-18 | AF10384 | ND |