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.
0
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | 0.0294 ppb | 17 | 1 | ND - 0.500 ppb |
| 2019 | 0.0438 ppb | 16 | 1 | ND - 0.700 ppb |
| 2020 | 0.156 ppb | 16 | 3 | ND - 1.06 ppb |
| 2021 | 0.0763 ppb | 16 | 2 | ND - 0.720 ppb |
| 2022 | 0.0313 ppb | 16 | 1 | ND - 0.500 ppb |
| 2023 | ND | 17 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
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 |
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