cis-1,2-Dichloroethylene
Jefferson Water Department
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.
8
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 | 1.55 ppb | 2 | 2 | 1.47 ppb - 1.63 ppb |
| 2019 | 0.690 ppb | 1 | 1 | 0.690 ppb |
| 2020 | 1.32 ppb | 1 | 1 | 1.32 ppb |
| 2021 | 0.790 ppb | 2 | 1 | ND - 1.58 ppb |
| 2022 | 2.06 ppb | 1 | 1 | 2.06 ppb |
| 2023 | 1.20 ppb | 1 | 1 | 1.20 ppb |
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 | 1D80162-01 | 1.63 ppb |
| 2018-10-09 | 1J80834-01 | 1.47 ppb |
| 2019-10-01 | 1J90156-02 | 0.690 ppb |
| 2020-10-27 | 1J02372-02 | 1.32 ppb |
| 2021-05-05 | 1EE0485-02 | ND |
| 2021-11-17 | 1EK1798-02 | 1.58 ppb |
| 2022-11-01 | 1FK0412-01 | 2.06 ppb |
| 2023-11-30 | 1GK1979-01 | 1.20 ppb |