trans-1,2-Dichloroethylene
Cy Champ Public Utility District
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 | 2 | 0 | ND |
2017 | ND | 7 | 0 | ND |
2018 | ND | 2 | 0 | ND |
2019 | ND | 5 | 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 |
---|---|---|
2014-08-05 | AC62123 | ND |
2014-08-05 | AC62135 | ND |
2015-05-05 | AC90542 | ND |
2015-05-05 | AC90554 | ND |
2016-11-16 | AD58335 | ND |
2016-11-16 | AD58333 | ND |
2017-05-08 | AD83082 | ND |
2017-05-08 | AD83074 | ND |
2017-05-30 | AD85929 | ND |
2017-05-30 | AD85931 | ND |
2017-09-13 | AD96019 | ND |
2017-09-13 | AD96011 | ND |
2017-11-27 | AE05757 | ND |
2018-01-09 | AE08377 | ND |
2018-06-19 | AE30479 | ND |
2019-02-12 | AE54124 | ND |
2019-02-12 | AE54128 | ND |
2019-05-08 | AE65461 | ND |
2019-08-15 | AE78946 | ND |
2019-11-06 | AE88709 | ND |