1,1-Dichloroethylene
City of Richland
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
15
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 | N/A | 0 | 0 | N/A |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | ND | 2 | 0 | ND |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 12 | 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 |
|---|---|---|
| 2016-05-25 | ND | |
| 2016-05-25 | ND | |
| 2018-07-05 | ND | |
| 2019-03-08 | ND | |
| 2019-04-11 | ND | |
| 2019-05-09 | ND | |
| 2019-06-06 | ND | |
| 2019-07-11 | ND | |
| 2019-08-08 | ND | |
| 2019-09-12 | ND | |
| 2019-09-18 | ND | |
| 2019-10-10 | ND | |
| 2019-11-07 | ND | |
| 2019-12-12 | ND | |
| 2019-12-13 | ND |