trans-1,2-Dichloroethylene
Shippensburg Boro 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 | 4 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 1 | 0 | ND |
| 2023 | ND | 4 | 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 |
|---|---|---|
| 2018-04-03 | (104) GUNTER | ND |
| 2019-04-10 | (104) GUNTER | ND |
| 2020-04-15 | 22158709.00 | ND |
| 2020-06-10 | 22552483.00 | ND |
| 2020-06-10 | 22552485.00 | ND |
| 2020-06-10 | 22552484.00 | ND |
| 2021-04-20 | 24380467.00 | ND |
| 2022-04-13 | 26594482.00 | ND |
| 2023-04-13 | 28845257.00 | ND |
| 2023-05-16 | 29045754.00 | ND |
| 2023-05-18 | 29045775.00 | ND |
| 2023-08-15 | 29644111.00 | ND |