trans-1,2-Dichloroethylene
Bridgeton City Water Department
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 | 2 | 0 | ND |
2016 | ND | 2 | 0 | ND |
2017 | ND | 4 | 0 | ND |
2018 | N/A | 0 | 0 | N/A |
2019 | N/A | 0 | 0 | N/A |
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 |
---|---|---|
2014-05-20 | L1324501-1 | ND |
2014-05-20 | L1324501-2 | ND |
2014-05-20 | L1324501-3 | ND |
2014-05-20 | L1324501-4 | ND |
2015-04-14 | L4093436-1 | ND |
2015-04-14 | L4093436-2 | ND |
2016-04-12 | L6176398-1 | ND |
2016-04-12 | L6176398-2 | ND |
2017-04-11 | L6759177-3 | ND |
2017-04-11 | L6759177-1 | ND |
2017-04-11 | L6759177-2 | ND |
2017-04-11 | L6759177-4 | ND |