trans-1,2-Dichloroethylene
Pawc Pocono District
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 | 3 | 0 | ND |
| 2019 | ND | 3 | 0 | ND |
| 2020 | ND | 9 | 0 | ND |
| 2021 | ND | 3 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 9 | 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
| Date | Lab ID | Result |
|---|---|---|
| 2018-02-14 | 38535301 | ND |
| 2018-02-14 | 38535401 | ND |
| 2018-02-22 | 38936801 | ND |
| 2019-02-11 | 42849401 | ND |
| 2019-02-11 | 42849501 | ND |
| 2019-02-11 | 42849301 | ND |
| 2020-02-18 | 21688469.00 | ND |
| 2020-02-18 | 21688532.00 | ND |
| 2020-02-18 | 21688448.00 | ND |
| 2020-02-18 | 21688595.00 | ND |
| 2020-02-18 | 21688553.00 | ND |
| 2020-02-18 | 21688511.00 | ND |
| 2020-02-18 | 21688490.00 | ND |
| 2020-02-18 | 21688574.00 | ND |
| 2020-03-10 | 21869681.00 | ND |
| 2021-02-23 | 23909458.00 | ND |
| 2021-02-23 | 23909479.00 | ND |
| 2021-02-23 | 23909437.00 | ND |
| 2022-02-17 | 26138310.00 | ND |
| 2022-02-17 | 26138349.00 | ND |
| 2022-02-17 | 26138288.00 | ND |
| 2023-02-06 | 28370386.00 | ND |
| 2023-02-07 | 28370240.00 | ND |
| 2023-02-07 | 28370323.00 | ND |
| 2023-02-07 | 28370302.00 | ND |
| 2023-02-07 | 28370260.00 | ND |
| 2023-02-07 | 28370344.00 | ND |
| 2023-02-07 | 28370365.00 | ND |
| 2023-02-07 | 28370202.00 | ND |
| 2023-02-07 | 28370281.00 | ND |