1,1-Dichloroethylene
Crown Ranch Subdivision
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
8
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 | ND | 1 | 0 | ND |
| 2016 | ND | 1 | 0 | ND |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 4 | 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 |
|---|---|---|
| 2015-03-31 | AC86775 | ND |
| 2016-01-11 | AD17326 | ND |
| 2017-08-14 | AD92943 | ND |
| 2018-06-14 | AE30058 | ND |
| 2019-01-16 | AE50150 | ND |
| 2019-04-16 | AE62572 | ND |
| 2019-08-21 | AE79910 | ND |
| 2019-12-09 | AE91676 | ND |