cis-1,2-Dichloroethylene
Town of Rising Sun
NOTE: Town of Rising Sun purchases water from Chester Water Authority which is required to test for cis-1,2-dichloroethylene. Sample information shown below was taken by Chester Water Authority.
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.
Samples
Samples exceeding legal limit (MCL)
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 | 3 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 3 | 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
NOTE: Town of Rising Sun purchases water from Chester Water Authority which is required to test for cis-1,2-dichloroethylene. Sample information shown below was taken by Chester Water Authority.
| Date | Lab ID | Result |
|---|---|---|
| 2018-01-09 | 2287664001 | ND |
| 2018-05-15 | 8012319-01 | ND |
| 2018-07-12 | 8020049-01 | ND |
| 2019-07-10 | 3044796001 | ND |
| 2020-02-03 | 21499830.00 | ND |
| 2020-05-01 | 22019656.00 | ND |
| 2020-07-01 | 22412574.00 | ND |
| 2021-04-09 | 24244245.00 | ND |
| 2021-07-28 | 24825590.00 | ND |
| 2022-04-29 | 26461081.00 | ND |
| 2022-08-09 | 27230360.00 | ND |
| 2022-11-08 | 27819906.00 | ND |
| 2023-07-12 | 29299107.00 | ND |
| 2023-11-08 | 30068040.00 | ND |
| 2023-11-15 | 30068565.00 | ND |