cis-1,2-Dichloroethylene
Pennsylvania American Water Company Butler
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.
11
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 | 1 | 0 | ND |
| 2022 | ND | 1 | 0 | ND |
| 2023 | ND | 6 | 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 |
|---|---|---|
| 2018-03-12 | 38836501 | ND |
| 2019-03-05 | 43248101 | ND |
| 2020-03-09 | 21939742.00 | ND |
| 2021-03-01 | 24158498.00 | ND |
| 2022-03-07 | 26380913.00 | ND |
| 2023-03-07 | 28618841.00 | ND |
| 2023-03-14 | 28618962.00 | ND |
| 2023-03-27 | 28618983.00 | ND |
| 2023-04-10 | 28809082.00 | ND |
| 2023-04-25 | 28809103.00 | ND |
| 2023-05-09 | 29010744.00 | ND |