trans-1,2-Dichloroethylene
East Cocalico Township
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 | 4 | 0 | ND |
| 2019 | ND | 4 | 0 | ND |
| 2020 | ND | 16 | 0 | ND |
| 2021 | ND | 6 | 0 | ND |
| 2022 | ND | 4 | 0 | ND |
| 2023 | ND | 16 | 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 |
|---|---|---|
| 2018-04-27 | 8045051-02RE | ND |
| 2018-04-27 | 8045051-08 | ND |
| 2018-04-27 | 8045051-11 | ND |
| 2018-04-27 | 8045051-10 | ND |
| 2019-04-29 | 9041601-06 | ND |
| 2019-04-29 | 9041601-08 | ND |
| 2019-04-29 | 9041601-09 | ND |
| 2019-04-29 | 9041601-02 | ND |
| 2020-05-01 | 22369769.00 | ND |
| 2020-05-01 | 22369748.00 | ND |
| 2020-05-01 | 22369725.00 | ND |
| 2020-05-01 | 22369702.00 | ND |
| 2020-05-01 | 22369679.00 | ND |
| 2020-05-01 | 22369656.00 | ND |
| 2020-05-01 | 22369633.00 | ND |
| 2020-05-01 | 22369610.00 | ND |
| 2020-05-01 | 22369587.00 | ND |
| 2020-05-01 | 22369542.00 | ND |
| 2020-05-01 | 22369564.00 | ND |
| 2020-05-11 | 22369510.00 | ND |
| 2020-09-25 | 23142981.00 | ND |
| 2020-10-22 | 23322770.00 | ND |
| 2020-10-29 | 23322728.00 | ND |
| 2020-11-20 | 23497284.00 | ND |
| 2021-03-10 | 24203663.00 | ND |
| 2021-04-08 | 24393855.00 | ND |
| 2021-04-08 | 24393834.00 | ND |
| 2021-04-08 | 24393805.00 | ND |
| 2021-04-08 | 24393882.00 | ND |
| 2021-07-14 | 24979179.00 | ND |
| 2022-04-08 | 26607724.00 | ND |
| 2022-04-08 | 26607769.00 | ND |
| 2022-04-08 | 26607748.00 | ND |
| 2022-04-08 | 26607697.00 | ND |
| 2023-01-11 | 28310396.00 | ND |
| 2023-01-11 | 28310369.00 | ND |
| 2023-01-11 | 28310441.00 | ND |
| 2023-01-11 | 28310420.00 | ND |
| 2023-04-12 | 28858504.00 | ND |
| 2023-04-12 | 28858506.00 | ND |
| 2023-04-12 | 28858503.00 | ND |
| 2023-04-12 | 28858505.00 | ND |
| 2023-07-12 | 29454836.00 | ND |
| 2023-09-13 | 29847931.00 | ND |
| 2023-09-13 | 29847933.00 | ND |
| 2023-09-13 | 29847936.00 | ND |
| 2023-09-13 | 29847934.00 | ND |
| 2023-09-13 | 29847935.00 | ND |
| 2023-09-13 | 29847932.00 | ND |
| 2023-10-25 | 30031833.00 | ND |