trans-1,2-Dichloroethylene
Connecticut Water Company - Shoreline Region-chester System
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 | 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 |
---|---|---|
2014-01-29 | 140130CWCAVOC1 | ND |
2014-05-14 | 6604VOC1 | ND |
2015-02-12 | BH73176VOC1 | ND |
2015-06-17 | BJ32481VOC1 | ND |
2016-02-11 | BK64356VOC1 | ND |
2016-05-25 | BN40398VOC1 | ND |
2017-01-18 | BX33133VOC1 | ND |
2017-11-15 | BZ42288VOC1 | ND |
2018-03-30 | CA11467VOC1 | ND |
2018-09-13 | VOC1 200505277 | ND |
2019-03-11 | VOC1 200524295 | ND |
2019-06-24 | VOC1 200538201 | ND |