trans-1,2-Dichloroethylene
Millersview-doole Water Supply Corporation
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 | 2 | 0 | ND |
2016 | ND | 2 | 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 |
---|---|---|
2014-02-27 | AC45091 | ND |
2015-05-19 | AC92583 | ND |
2015-05-19 | AC92575 | ND |
2016-02-17 | AD24301 | ND |
2016-02-17 | AD24303 | ND |
2017-03-01 | Q1708974002 | ND |
2017-05-17 | Q1720172002 | ND |
2018-02-22 | Q1807532003 | ND |
2018-05-15 | Q1819705008 | ND |
2019-03-07 | Q1909828003 | ND |
2019-05-08 | Q1922600002 | ND |