1,1-Dichloroethylene
Northwest Utilities
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
19
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | ND | 3 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 5 | 0 | ND |
| 2018 | ND | 3 | 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 | Result |
|---|---|
| 2014-07-21 | ND |
| 2014-07-21 | ND |
| 2014-07-21 | ND |
| 2015-09-15 | ND |
| 2015-09-15 | ND |
| 2015-09-15 | ND |
| 2016-09-12 | ND |
| 2016-09-12 | ND |
| 2016-09-12 | ND |
| 2017-08-08 | ND |
| 2017-08-08 | ND |
| 2017-08-08 | ND |
| 2017-08-08 | ND |
| 2017-08-08 | ND |
| 2018-03-13 | ND |
| 2018-03-13 | ND |
| 2018-03-13 | ND |
| 2019-05-14 | ND |
| 2019-05-14 | ND |