1,1-Dichloroethylene
Cheshire County Complex
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
8
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 |
|---|---|---|---|---|
| 2014 | ND | 1 | 0 | ND |
| 2015 | ND | 2 | 0 | ND |
| 2016 | ND | 1 | 0 | ND |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
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 |
|---|---|---|
| 2014-08-12 | 134710.02 | ND |
| 2015-08-05 | 146537.01 | ND |
| 2015-08-05 | 146537.02 | ND |
| 2016-09-06 | 160165.02 | ND |
| 2017-08-23 | 172591.02 | ND |
| 2018-08-20 | 185696.01 | ND |
| 2018-08-20 | 185696.02 | ND |
| 2019-08-27 | 199657.02 | ND |