1,1-Dichloroethylene
Walpole Water Department
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 | ND | 8 | 0 | ND |
2015 | ND | 8 | 0 | ND |
2016 | ND | 8 | 0 | ND |
2017 | ND | 9 | 0 | ND |
2018 | ND | 8 | 0 | ND |
2019 | ND | 8 | 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 | Result |
---|---|
2014-02-03 | ND |
2014-02-03 | ND |
2014-05-05 | ND |
2014-05-05 | ND |
2014-08-04 | ND |
2014-08-04 | ND |
2014-11-03 | ND |
2014-11-03 | ND |
2015-02-02 | ND |
2015-02-02 | ND |
2015-05-04 | ND |
2015-05-04 | ND |
2015-08-03 | ND |
2015-08-03 | ND |
2015-11-02 | ND |
2015-11-02 | ND |
2016-02-01 | ND |
2016-02-01 | ND |
2016-05-16 | ND |
2016-05-16 | ND |
2016-08-01 | ND |
2016-08-01 | ND |
2016-11-07 | ND |
2016-11-07 | ND |
2017-02-06 | ND |
2017-02-06 | ND |
2017-05-01 | ND |
2017-05-01 | ND |
2017-08-07 | ND |
2017-08-07 | ND |
2017-08-23 | ND |
2017-11-06 | ND |
2017-11-06 | ND |
2018-02-05 | ND |
2018-02-05 | ND |
2018-05-07 | ND |
2018-05-07 | ND |
2018-08-06 | ND |
2018-08-06 | ND |
2018-11-05 | ND |
2018-11-05 | ND |
2019-02-04 | ND |
2019-02-04 | ND |
2019-05-06 | ND |
2019-05-06 | ND |
2019-08-05 | ND |
2019-08-05 | ND |
2019-11-04 | ND |
2019-11-04 | ND |