trans-1,2-Dichloroethylene
Crystal Clear WSC
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 | 1 | 0 | ND |
2015 | ND | 5 | 0 | ND |
2016 | ND | 3 | 0 | ND |
2017 | ND | 2 | 0 | ND |
2018 | ND | 3 | 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 |
---|---|---|
2014-09-04 | AC65845 | ND |
2015-07-30 | AD01820 | ND |
2015-07-30 | AD01810 | ND |
2015-12-07 | AD15746 | ND |
2015-12-07 | AD15742 | ND |
2015-12-07 | AD15736 | ND |
2016-03-16 | AD29061 | ND |
2016-03-16 | AD29065 | ND |
2016-06-07 | AD39628 | ND |
2017-02-07 | AD69210 | ND |
2017-02-07 | AD69216 | ND |
2018-02-13 | AE13586 | ND |
2018-02-13 | AE13582 | ND |
2018-08-09 | AE36386 | ND |
2019-01-28 | AE51626 | ND |
2019-01-28 | AE51624 | ND |