trans-1,2-Dichloroethylene
City of Taneytown
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 | 13 | 0 | ND |
| 2019 | ND | 12 | 0 | ND |
| 2020 | ND | 5 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | ND | 6 | 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 |
|---|---|---|
| 2018-03-05 | 2300211001 | ND |
| 2018-03-13 | E18003311004 | ND |
| 2018-06-20 | E18004567001 | ND |
| 2018-06-26 | 2322947001 | ND |
| 2018-07-10 | 2325449001 | ND |
| 2018-07-10 | 2325449002 | ND |
| 2018-08-16 | E19000551001 | ND |
| 2018-08-16 | E19000551004 | ND |
| 2018-08-16 | E19000551006 | ND |
| 2018-08-16 | E19000551008 | ND |
| 2018-08-20 | 2333891001 | ND |
| 2018-10-24 | E19001379001 | ND |
| 2018-11-06 | 2349403001 | ND |
| 2019-03-19 | 3022708001 | ND |
| 2019-06-03 | 3037434001 | ND |
| 2019-06-13 | E19004289004 | ND |
| 2019-07-15 | 3045714001 | ND |
| 2019-07-15 | 3045712001 | ND |
| 2019-07-25 | E20000354012 | ND |
| 2019-07-25 | E20000354008 | ND |
| 2019-07-25 | E20000354006 | ND |
| 2019-07-25 | E20000354004 | ND |
| 2019-07-25 | E20000354001 | ND |
| 2019-07-25 | E20000354010 | ND |
| 2019-11-05 | 3068008001 | ND |
| 2020-02-18 | 3087316001 | ND |
| 2020-03-03 | E20002984006 | ND |
| 2020-09-16 | E21000751006 | ND |
| 2020-09-16 | E21000751004 | ND |
| 2020-09-16 | E21000751001 | ND |
| 2021-03-15 | E21002483001 | ND |
| 2021-03-15 | E21002483004 | ND |
| 2023-03-21 | E2300223601 | ND |
| 2023-03-21 | E2300223701 | ND |
| 2023-05-23 | E2300281402 | ND |
| 2023-05-23 | E2300281404 | ND |
| 2023-05-23 | E2300281406 | ND |
| 2023-05-23 | E2300281408 | ND |