trans-1,2-Dichloroethylene
Waunakee Waterworks
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 | 6 | 0 | ND |
2015 | ND | 4 | 0 | ND |
2016 | ND | 1 | 0 | ND |
2017 | ND | 6 | 0 | ND |
2018 | ND | 4 | 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 |
---|---|---|
2014-02-10 | 769678 | ND |
2014-02-10 | 769683 | ND |
2014-02-10 | 769686 | ND |
2014-02-10 | 769680 | ND |
2014-04-16 | 780796 | ND |
2014-04-16 | 780797 | ND |
2015-03-10 | 847412 | ND |
2015-05-04 | 858130 | ND |
2015-07-27 | 873353 | ND |
2015-10-05 | 887254 | ND |
2016-08-16 | 940120 | ND |
2017-01-31 | 971660 | ND |
2017-01-31 | 971656 | ND |
2017-02-06 | 972337 | ND |
2017-04-11 | 982557 | ND |
2017-07-11 | 1003165 | ND |
2017-10-03 | 1022337 | ND |
2018-01-31 | 1039288 | ND |
2018-04-03 | 1048174 | ND |
2018-07-11 | 1066417 | ND |
2018-10-08 | 1085741 | ND |
2019-07-01 | 1131600 | ND |
2019-12-02 | 1162821 | ND |