cis-1,2-Dichloroethylene
Duncannon Municipal Water
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.
18
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 | 1 | 0 | ND |
| 2020 | ND | 4 | 0 | ND |
| 2021 | ND | 6 | 0 | ND |
| 2022 | ND | 1 | 0 | ND |
| 2023 | ND | 4 | 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 |
|---|---|---|
| 2018-08-22 | 8H23016-02 | ND |
| 2018-11-13 | 8K15056-01 | ND |
| 2019-08-19 | 9080661-01 | ND |
| 2020-03-30 | 21991353.00 | ND |
| 2020-03-30 | 21991354.00 | ND |
| 2020-03-30 | 21991355.00 | ND |
| 2020-08-04 | 22967114.00 | ND |
| 2021-02-15 | 24027735.00 | ND |
| 2021-03-08 | 24214568.00 | ND |
| 2021-03-22 | 24214635.00 | ND |
| 2021-06-01 | 24798977.00 | ND |
| 2021-08-03 | 25189156.00 | ND |
| 2021-12-28 | 25914143.00 | ND |
| 2022-10-26 | 27795513.00 | ND |
| 2023-07-31 | 29465054.00 | ND |
| 2023-07-31 | 29465023.00 | ND |
| 2023-07-31 | 29465074.00 | ND |
| 2023-07-31 | 29465003.00 | ND |