cis-1,2-Dichloroethylene
City of Winter Springs
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 |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | 0.134 ppb | 4 | 1 | ND - 0.536 ppb |
2015 | ND | 1 | 0 | ND |
2016 | ND | 1 | 0 | ND |
2017 | 0.433 ppb | 3 | 1 | ND - 1.30 ppb |
2018 | 0.860 ppb | 1 | 1 | 0.860 ppb |
2019 | ND | 1 | 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 | Result |
---|---|
2014-02-12 | 0.536 ppb |
2014-07-30 | ND |
2014-07-30 | ND |
2014-07-30 | ND |
2015-01-14 | ND |
2016-01-07 | ND |
2017-01-18 | ND |
2017-01-18 | ND |
2017-02-20 | 1.30 ppb |
2018-01-24 | 0.860 ppb |
2019-01-03 | ND |