1,1-Dichloroethylene
Sierra Road Improvement Association Inc.
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
0
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 | 0.0115 ppb | 66 | 1 | ND - 0.760 ppb |
| 2015 | ND | 63 | 0 | ND |
| 2016 | 0.0110 ppb | 78 | 1 | ND - 0.860 ppb |
| 2017 | 0.0213 ppb | 68 | 2 | ND - 0.870 ppb |
| 2018 | 0.0368 ppb | 50 | 3 | ND - 0.640 ppb |
| 2019 | 0.0378 ppb | 54 | 3 | ND - 0.780 ppb |
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 |
|---|