cis-1,2-Dichloroethylene
Colby 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 | 3 | 0 | ND |
2015 | ND | 2 | 0 | ND |
2016 | ND | 3 | 0 | ND |
2017 | ND | 2 | 0 | ND |
2018 | ND | 1 | 0 | ND |
2019 | ND | 2 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
EPA Maximum Contaminant
Level (MCL) 70 ppb
The legal limit for cis-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 |
---|---|---|
2014-08-13 | 810326 | ND |
2014-08-13 | 810323 | ND |
2014-10-24 | 827642 | ND |
2015-08-25 | 878740 | ND |
2015-11-17 | 894440 | ND |
2016-03-08 | 909005 | ND |
2016-05-10 | 920384 | ND |
2016-09-20 | 946837 | ND |
2017-09-12 | 1017662 | ND |
2017-09-12 | 1017665 | ND |
2018-06-04 | 1058548 | ND |
2019-09-09 | 1146072 | ND |
2019-09-18 | 1149297 | ND |