trans-1,2-Dichloroethylene
Bethany
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 | 4 | 0 | ND |
2015 | ND | 4 | 0 | ND |
2016 | ND | 4 | 0 | ND |
2017 | ND | 4 | 0 | ND |
2018 | ND | 2 | 0 | ND |
2019 | ND | 1 | 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 |
---|---|---|
2014-02-28 | 4B28008-01 | ND |
2014-06-02 | 4F02034-01 | ND |
2014-09-01 | 4I02021-02 | ND |
2014-12-03 | 4L03017-02 | ND |
2015-03-04 | 5C04003-02 | ND |
2015-06-03 | 5F03132-02 | ND |
2015-09-02 | 5I02044-02 | ND |
2015-12-02 | 5L02031-02 | ND |
2016-03-03 | 6C03032-01 | ND |
2016-06-02 | 6F02019-01 | ND |
2016-09-07 | 6I07033-01 | ND |
2016-12-01 | 6L01012-01 | ND |
2017-03-02 | 7C02012-01 | ND |
2017-05-16 | 7E16051-01 | ND |
2017-09-05 | 7I05076-01 | ND |
2017-12-04 | 7L04019-01 | ND |
2018-03-05 | AC05029-01 | ND |
2018-06-05 | AF05114-01 | ND |
2019-03-14 | BC14002-01RE1 | ND |