1,1-Dichloroethylene
City of Ontario
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 |
|---|---|---|---|---|
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
| 2020 | ND | 1 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 1 | 0 | ND |
| 2023 | ND | 1 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
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 |
|---|---|---|
| 2018-04-19 | 1804853002-V | ND |
| 2018-07-11 | 1807589003-V | ND |
| 2019-07-16 | 1907762003-V | ND |
| 2020-07-06 | 2007246-V | ND |
| 2021-10-26 | 2110A39001B-V | ND |
| 2022-07-19 | 2207730-001A-V | ND |
| 2023-07-06 | 23070333-01A-V | ND |