1,1-Dichloroethylene
Millis 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 | 0.0567 ppb | 9 | 1 | ND - 0.510 ppb |
2015 | ND | 7 | 0 | ND |
2016 | ND | 8 | 0 | ND |
2017 | ND | 10 | 0 | ND |
2018 | ND | 9 | 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 |
---|---|
2014-02-26 | ND |
2014-02-26 | ND |
2014-05-28 | ND |
2014-05-28 | ND |
2014-05-28 | ND |
2014-05-28 | 0.510 ppb |
2014-05-28 | ND |
2014-08-28 | ND |
2014-11-25 | ND |
2015-02-24 | ND |
2015-05-27 | ND |
2015-05-27 | ND |
2015-05-27 | ND |
2015-05-27 | ND |
2015-09-29 | ND |
2015-11-24 | ND |
2016-02-25 | ND |
2016-06-21 | ND |
2016-06-21 | ND |
2016-06-21 | ND |
2016-06-21 | ND |
2016-06-21 | ND |
2016-08-30 | ND |
2016-11-21 | ND |
2017-02-21 | ND |
2017-03-13 | ND |
2017-06-20 | ND |
2017-06-20 | ND |
2017-07-20 | ND |
2017-09-29 | ND |
2017-09-29 | ND |
2017-10-10 | ND |
2017-10-13 | ND |
2017-10-13 | ND |
2018-02-27 | ND |
2018-05-29 | ND |
2018-05-29 | ND |
2018-05-29 | ND |
2018-05-29 | ND |
2018-05-29 | ND |
2018-05-29 | ND |
2018-12-11 | ND |
2018-12-20 | ND |
2019-02-27 | ND |
2019-05-30 | ND |
2019-05-30 | ND |
2019-05-30 | ND |
2019-05-30 | ND |
2019-05-30 | ND |
2019-08-28 | ND |
2019-12-18 | ND |