1,1-Dichloroethylene
Lake Hemet-garner Valley
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
9
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 | N/A | 0 | 0 | N/A |
2017 | ND | 2 | 0 | ND |
2018 | ND | 2 | 0 | ND |
2019 | ND | 5 | 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 |
---|---|---|
2017-11-14 | 3761-010-1015 | ND |
2017-12-21 | 3761-009-0900 | ND |
2018-02-13 | 3761-004-0950 | ND |
2018-05-08 | 3761-004-0850 | ND |
2019-03-14 | 3761-001-1125 | ND |
2019-04-09 | 3761-004-1130 | ND |
2019-04-09 | 3761-010-1210 | ND |
2019-06-25 | 3761-003-0915 | ND |
2019-08-27 | 3761-002-0855 | ND |