trans-1,2-Dichloroethylene
Fox River 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 |
|---|---|---|---|---|
| 2014 | ND | 3 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 7 | 0 | ND |
| 2019 | 0.256 ppb | 5 | 2 | ND - 0.700 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
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 |
|---|---|---|
| 2014-01-22 | 14A0332-01 | ND |
| 2014-10-15 | 14J0343-02 | ND |
| 2014-10-15 | 14J0343-01 | ND |
| 2017-01-18 | 17A0307-01 | ND |
| 2017-01-18 | 1740307-02 | ND |
| 2018-01-17 | 18A0317-02 | ND |
| 2018-01-17 | 18A0317-01 | ND |
| 2018-04-25 | 8044477-01 | ND |
| 2018-04-25 | 8044477-02 | ND |
| 2018-08-21 | 8084046-01 | ND |
| 2018-08-21 | 8084205-01 | ND |
| 2018-11-15 | 8113061-01 | ND |
| 2019-02-13 | 9022158-01 | ND |
| 2019-02-13 | 9022158-02 | ND |
| 2019-05-21 | 9054356-01 | 0.580 ppb |
| 2019-09-12 | 9092540-01 | ND |
| 2019-11-19 | 9113219-01 | 0.700 ppb |