cis-1,2-Dichloroethylene
City of Lancaster
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.
12
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 | 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 |
|---|---|---|
| 2018-04-23 | 1810508-01 | ND |
| 2018-04-23 | 1810508-02 | ND |
| 2019-01-31 | 3013972001 | ND |
| 2019-01-31 | 3013972003 | ND |
| 2020-04-30 | 22169826.00 | ND |
| 2020-04-30 | 22169847.00 | ND |
| 2021-05-13 | 24591310.00 | ND |
| 2021-05-13 | 24591331.00 | ND |
| 2022-05-12 | 26798823.00 | ND |
| 2022-05-12 | 26798844.00 | ND |
| 2023-05-04 | 29057577.00 | ND |
| 2023-05-04 | 29057578.00 | ND |