1,1-Dichloroethylene
Ayer DPW Water Division
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 | 7 | 0 | ND |
2015 | ND | 8 | 0 | ND |
2016 | ND | 5 | 0 | ND |
2017 | ND | 6 | 0 | ND |
2018 | ND | 8 | 0 | ND |
2019 | ND | 10 | 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 |
---|---|
2014-08-19 | ND |
2014-08-19 | ND |
2014-08-19 | ND |
2014-08-19 | ND |
2014-08-19 | ND |
2014-08-19 | ND |
2014-11-18 | ND |
2015-03-16 | ND |
2015-05-13 | ND |
2015-08-04 | ND |
2015-08-04 | ND |
2015-08-04 | ND |
2015-08-04 | ND |
2015-08-04 | ND |
2015-08-04 | ND |
2016-09-12 | ND |
2016-09-12 | ND |
2016-09-12 | ND |
2016-09-12 | ND |
2016-09-12 | ND |
2017-09-18 | ND |
2017-09-18 | ND |
2017-09-18 | ND |
2017-09-18 | ND |
2017-09-18 | ND |
2017-09-18 | ND |
2018-06-13 | ND |
2018-08-14 | ND |
2018-08-14 | ND |
2018-08-14 | ND |
2018-08-14 | ND |
2018-08-14 | ND |
2018-08-14 | ND |
2018-08-14 | ND |
2019-03-05 | ND |
2019-03-05 | ND |
2019-09-19 | ND |
2019-09-19 | ND |
2019-09-19 | ND |
2019-09-19 | ND |
2019-09-19 | ND |
2019-09-19 | ND |
2019-09-19 | ND |
2019-12-10 | ND |