trans-1,2-Dichloroethylene
Branson
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 | 7 | 0 | ND |
2015 | ND | 2 | 0 | ND |
2016 | ND | 1 | 0 | ND |
2017 | ND | 8 | 0 | ND |
2018 | ND | 2 | 0 | ND |
2019 | ND | 3 | 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 |
---|---|---|
2014-03-31 | AC21323 | ND |
2014-03-31 | AC21324 | ND |
2014-03-31 | AC21325 | ND |
2014-03-31 | AC21326 | ND |
2014-03-31 | AC21327 | ND |
2014-03-31 | AC21328 | ND |
2014-03-31 | AC21322 | ND |
2015-03-26 | AC44429 | ND |
2015-03-26 | AC44428 | ND |
2016-03-23 | AC69096 | ND |
2017-03-28 | AC92723 | ND |
2017-03-28 | AC92720 | ND |
2017-03-28 | AC92721 | ND |
2017-03-28 | AC92724 | ND |
2017-03-28 | AC92725 | ND |
2017-03-28 | AC92719 | ND |
2017-03-28 | AC92722 | ND |
2017-03-28 | AC92726 | ND |
2018-05-16 | AD17325 | ND |
2018-05-16 | AD17326 | ND |
2019-03-13 | AD41149 | ND |
2019-03-13 | AD41150 | ND |
2019-04-09 | AD46701 | ND |