cis-1,2-Dichloroethylene
Alton Water Works
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 | 1 | 0 | ND |
2015 | ND | 3 | 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
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 |
---|---|---|
2014-03-24 | 129795.01 | ND |
2015-03-24 | 141475.01 | ND |
2015-04-02 | 141786.01 | ND |
2015-04-02 | 141787.01 | ND |
2016-03-17 | A153943.01 | ND |
2016-06-20 | 157373.01 | ND |
2017-03-02 | 166100.01 | ND |
2017-06-19 | 170033.01 | ND |
2018-03-25 | 179876.01 | ND |
2018-06-07 | 182788.01 | ND |
2019-03-05 | 192582.01 | ND |
2019-05-15 | 195473.01 | ND |