trans-1,2-Dichloroethylene
Franklin County Water 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 |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | ND | 4 | 0 | ND |
2015 | ND | 1 | 0 | ND |
2016 | ND | 5 | 0 | ND |
2017 | ND | 2 | 0 | ND |
2018 | ND | 1 | 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 |
---|---|---|
2014-01-13 | AI26407 | ND |
2014-04-23 | AI38762 | ND |
2014-07-14 | AI45668 | ND |
2014-10-15 | AI57675 | ND |
2015-05-05 | AI76370 | ND |
2016-03-02 | AJ07463 | ND |
2016-03-02 | AJ07464 | ND |
2016-04-14 | AJ10154 | ND |
2016-07-21 | AJ19087 | ND |
2016-10-06 | AJ30937 | ND |
2017-01-26 | AJ43639 | ND |
2017-01-26 | AJ43640 | ND |
2018-02-27 | AJ84671 | ND |
2019-05-02 | AK16252 | ND |