trans-1,2-Dichloroethylene
City of Earth
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 |
---|---|---|
2014-02-12 | Q1404319003 | ND |
2015-01-28 | Q1503490001 | ND |
2015-04-21 | Q1514848006 | ND |
2016-02-04 | Q1605126001 | ND |
2016-04-25 | Q1616090002 | ND |
2017-01-19 | Q1702731002 | ND |
2017-04-11 | Q1714715002 | ND |
2018-01-18 | Q1802120001 | ND |
2018-04-11 | Q1814883007 | ND |
2019-01-22 | Q1903154006 | ND |
2019-01-22 | Q1903154002 | ND |