trans-1,2-Dichloroethylene
Town of Rising Sun
NOTE: Town of Rising Sun purchases water from Chester Water Authority which is required to test for trans-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
EWG Health Guideline: 60 ppb
The EWG Health Guideline of 60 ppb for trans-1,2-dichloroethylene was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against harm to internal organs.
EPA Maximum Contaminant
Level (MCL): 100 ppb
The legal limit for trans-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 trans-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 | 21499826.00 | ND |
| 2020-05-01 | 22019658.00 | ND |
| 2020-07-01 | 22412576.00 | ND |
| 2021-04-09 | 24244247.00 | ND |
| 2021-07-28 | 24825574.00 | ND |
| 2022-04-29 | 26461083.00 | ND |
| 2022-08-09 | 27230370.00 | ND |
| 2022-11-08 | 27819908.00 | ND |
| 2023-07-12 | 29299114.00 | ND |
| 2023-11-08 | 30068042.00 | ND |
| 2023-11-15 | 30068563.00 | ND |