trans-1,2-Dichloroethylene
Joyceville-holly Grove
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 | N/A | 0 | 0 | N/A |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 4 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 1 | 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 |
|---|---|---|
| 2019-10-02 | 19J0094-05 | ND |
| 2019-11-21 | 19K1016-01 | ND |
| 2020-01-16 | 20A0783-03 | ND |
| 2020-04-14 | 20D0580-02 | ND |
| 2020-08-05 | 20H0238-02 | ND |
| 2020-11-16 | 20K0762-02 | ND |
| 2021-01-07 | 21A0279-02 | ND |
| 2022-02-03 | 22B0374-02 | ND |
| 2022-10-25 | 22J1233-02 | ND |
| 2022-11-15 | 22K0789-01 | ND |
| 2023-02-14 | 23B0896-03 | ND |