trans-1,2-Dichloroethylene
Palmer Lake, Town of
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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | ND | 3 | 0 | ND |
2015 | ND | 3 | 0 | ND |
2016 | ND | 3 | 0 | ND |
2017 | ND | 3 | 0 | ND |
2018 | ND | 3 | 0 | ND |
2019 | ND | 3 | 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 | Result |
---|---|
2014-01-29 | ND |
2014-06-17 | ND |
2014-09-17 | ND |
2015-01-27 | ND |
2015-05-14 | ND |
2015-08-06 | ND |
2016-02-24 | ND |
2016-05-24 | ND |
2016-08-04 | ND |
2017-02-08 | ND |
2017-06-15 | ND |
2017-08-22 | ND |
2018-03-01 | ND |
2018-06-07 | ND |
2018-08-14 | ND |
2019-03-11 | ND |
2019-05-28 | ND |
2019-07-31 | ND |