cis-1,2-Dichloroethylene
Jefferson County Water Control and Improvement District 10
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.
9
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 | 1 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
| 2020 | ND | 1 | 0 | ND |
| 2021 | ND | 3 | 0 | ND |
| 2022 | ND | 2 | 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 |
|---|---|---|
| 2018-01-31 | AE11563 | ND |
| 2019-02-21 | AE55356 | ND |
| 2020-02-13 | AE98437 | ND |
| 2021-05-24 | AF55157 | ND |
| 2021-07-19 | AF62432 | ND |
| 2021-11-18 | AF77134 | ND |
| 2022-01-12 | AF80004 | ND |
| 2022-04-12 | AF92929 | ND |
| 2023-01-09 | AG23456 | ND |