1,1-Dichloroethylene
Richmond Hill
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 | 4 | 0 | ND |
2015 | ND | 3 | 0 | ND |
2016 | ND | 1 | 0 | ND |
2017 | ND | 4 | 0 | ND |
2018 | ND | 1 | 0 | ND |
2019 | N/A | 0 | 0 | N/A |
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 |
---|---|---|
2014-06-12 | AI43081 | ND |
2014-06-12 | AI43082 | ND |
2014-06-12 | AI43083 | ND |
2014-12-18 | AI61842 | ND |
2015-01-22 | AI63334 | ND |
2015-04-06 | AI74148 | ND |
2015-07-09 | AI82401 | ND |
2016-02-08 | AJ06043 | ND |
2017-03-12 | AJ47954 | ND |
2017-03-12 | AJ47955 | ND |
2017-03-12 | AJ47956 | ND |
2017-03-12 | AJ47957 | ND |
2018-02-15 | AJ84027 | ND |