trans-1,2-Dichloroethylene
Crawford County Water System
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | ND | 2 | 0 | ND |
2015 | ND | 2 | 0 | ND |
2016 | ND | 3 | 0 | ND |
2017 | ND | 2 | 0 | ND |
2018 | ND | 2 | 0 | ND |
2019 | ND | 2 | 0 | ND |
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 |
---|---|---|
2014-02-19 | AI28369 | ND |
2014-02-19 | AI28370 | ND |
2015-03-02 | AI65775 | ND |
2015-03-02 | AI65776 | ND |
2016-02-24 | AJ07089 | ND |
2016-02-24 | AJ07090 | ND |
2016-04-19 | AJ10545 | ND |
2017-05-17 | AJ55683 | ND |
2017-05-17 | AJ55684 | ND |
2018-03-07 | AJ85203 | ND |
2018-03-07 | AJ85204 | ND |
2019-03-19 | AK13597 | ND |
2019-03-19 | AK13598 | ND |