1,1-Dichloroethylene
Portland Water Bureau
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 | 2 | 0 | ND |
2015 | ND | 2 | 0 | ND |
2016 | ND | 2 | 0 | ND |
2017 | ND | 2 | 0 | ND |
2018 | ND | 2 | 0 | ND |
2019 | ND | 2 | 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 |
---|---|---|
2014-04-08 | BB38036-V | ND |
2014-07-08 | BB42035-V | ND |
2015-03-31 | BB49816-V | ND |
2015-06-17 | BB52444-V | ND |
2016-04-05 | BB61496-V | ND |
2016-08-01 | BB71730-V | ND |
2017-02-22 | BB84114-V | ND |
2017-04-04 | BB87017-V | ND |
2018-03-15 | BC03118-V | ND |
2018-04-03 | BC04117-V | ND |
2019-04-02 | BC21049-V | ND |
2019-07-15 | BC25289-V | ND |