trans-1,2-Dichloroethylene
Trumbauersville Municipal Waterworks
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 | 4 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 1 | 0 | ND |
| 2023 | ND | 7 | 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 |
|---|---|---|
| 2018-12-23 | 3007776001 | ND |
| 2019-03-31 | 3025257001 | ND |
| 2019-06-30 | 3043361001 | ND |
| 2019-09-18 | 3059109001 | ND |
| 2019-12-31 | 3078526002 | ND |
| 2020-03-31 | 21832475.00 | ND |
| 2020-12-29 | 23522846.00 | ND |
| 2021-09-30 | 25204795.00 | ND |
| 2021-09-30 | 25204818.00 | ND |
| 2022-12-29 | 27984497.00 | ND |
| 2023-05-18 | 29093115.00 | ND |
| 2023-05-26 | 29093117.00 | ND |
| 2023-05-26 | 29093116.00 | ND |
| 2023-08-17 | 29481186.00 | ND |
| 2023-08-23 | 29481187.00 | ND |
| 2023-10-25 | 29872577.00 | ND |
| 2023-11-10 | 30057806.00 | ND |