cis-1,2-Dichloroethylene
Watertown 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 | 1 | 0 | ND |
2016 | ND | 3 | 0 | ND |
2017 | ND | 2 | 0 | ND |
2018 | ND | 3 | 0 | ND |
2019 | ND | 3 | 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 |
---|---|---|
2014-05-05 | 783787 | ND |
2014-05-05 | 783790 | ND |
2014-05-05 | 783793 | ND |
2015-04-20 | 855197 | ND |
2016-05-02 | 918945 | ND |
2016-05-02 | 918947 | ND |
2016-05-02 | 918949 | ND |
2017-05-03 | 986655 | ND |
2017-05-03 | 986659 | ND |
2018-02-12 | 1040467 | ND |
2018-04-09 | 1049313 | ND |
2018-04-09 | 1049315 | ND |
2019-03-20 | 1110824 | ND |
2019-03-20 | 1110826 | ND |
2019-03-20 | 1110828 | ND |