1,1-Dichloroethylene
Redmond Water Department
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
14
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | ND | 7 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 7 | 0 | ND |
| 2018 | N/A | 0 | 0 | N/A |
| 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 |
|---|---|---|
| 2014-06-09 | B4F091102-V | ND |
| 2014-06-09 | B4F091103-V | ND |
| 2014-06-09 | B4F091104-V | ND |
| 2014-06-09 | B4F091105-V | ND |
| 2014-06-09 | B4F091106-V | ND |
| 2014-06-09 | B4F091107-V | ND |
| 2014-06-19 | B4F091101-V | ND |
| 2017-02-21 | 1708685-V | ND |
| 2017-02-21 | 1708666-V | ND |
| 2017-05-31 | 1728864-V | ND |
| 2017-05-31 | 1728868-V | ND |
| 2017-06-20 | 1733199-V | ND |
| 2017-07-27 | 1741510-V | ND |
| 2017-07-27 | 1741513-V | ND |