1,1-Dichloroethylene
Ponderosa Community Services District
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
7
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 | 6 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | N/A | 0 | 0 | N/A |
| 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 |
|---|---|---|
| 2014-10-09 | 1653-001-1448 | ND |
| 2014-10-09 | 1653-002-1450 | ND |
| 2014-10-09 | 1653-003-1430 | ND |
| 2014-10-09 | 1653-004-1440 | ND |
| 2014-12-16 | 1653-001-1100 | ND |
| 2014-12-16 | 1653-003-1050 | ND |
| 2019-05-01 | 1653-002-0925 | ND |