1,1-Dichloroethylene
City of Chino
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
11
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 | 1 | 0 | ND |
| 2015 | ND | 6 | 0 | ND |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 4 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2014-03-25 | 9590-019-0830 | ND |
| 2015-08-25 | 9590-004-0720 | ND |
| 2015-08-25 | 9590-009-0900 | ND |
| 2015-08-25 | 9590-010-0740 | ND |
| 2015-08-25 | 9590-011-0930 | ND |
| 2015-08-25 | 9590-012-0900 | ND |
| 2015-08-25 | 9590-019-1100 | ND |
| 2018-07-17 | 9588-008-0920 | ND |
| 2018-07-17 | 9588-012-0815 | ND |
| 2018-07-31 | 9588-019-0705 | ND |
| 2018-11-27 | 9588-004-0840 | ND |