1,1-Dichloroethylene
Ritzville Water Department
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
10
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 | 2 | 0 | ND |
| 2015 | ND | 4 | 0 | ND |
| 2016 | ND | 1 | 0 | ND |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 1 | 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 |
|---|---|---|
| 2014-07-08 | 02192 | ND |
| 2014-08-28 | 04140 | ND |
| 2015-03-19 | 10650 | ND |
| 2015-06-24 | 13541 | ND |
| 2015-07-01 | 13771 | ND |
| 2015-08-02 | 15895 | ND |
| 2016-06-08 | ND | |
| 2017-07-20 | ND | |
| 2018-08-09 | ND | |
| 2019-05-23 | ND |