cis-1,2-Dichloroethylene
St John Water District 1
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 | 2 | 0 | ND |
2015 | ND | 2 | 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 |
---|---|---|
2014-01-22 | AD88499 | ND |
2014-01-22 | AD88499 | ND |
2015-04-06 | 35182606003 | ND |
2015-04-06 | 35182606003 | ND |
2016-02-23 | 35231304005 | ND |
2016-02-23 | 35231304005 | ND |
2017-01-25 | 35291206002 | ND |
2017-01-25 | 35291206002 | ND |
2018-01-23 | 35370117004 | ND |
2018-01-23 | 35370117004 | ND |
2019-01-22 | 35444040001 | ND |
2019-01-22 | 35444040001 | ND |