1,1-Dichloroethylene
Connecticut Water Company - Northern Reg-reservoir Heights
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | 0.106 ppb | 16 | 2 | ND - 1.000 ppb |
2015 | 0.0688 ppb | 16 | 1 | ND - 1.10 ppb |
2016 | 0.269 ppb | 16 | 4 | ND - 1.30 ppb |
2017 | 0.0765 ppb | 17 | 2 | ND - 0.800 ppb |
2018 | 0.0294 ppb | 17 | 1 | ND - 0.500 ppb |
2019 | 0.0438 ppb | 16 | 1 | ND - 0.700 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
EPA Maximum Contaminant
Level (MCL) 7 ppb
The legal limit for 1,1-dichloroethylene, established in 1987, was based on a toxicity study conducted in laboratory animals in the 1980s.
ppb = parts per billion
All test results
Date | Lab ID | Result |
---|