1,1-Dichloroethylene
Vallecitos Mutual Domestic Water Consumers Association
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
6
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 | 1 | 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 |
|---|---|---|
| 2018-08-07 | 2018022267 | ND |
| 2019-03-26 | 2019007834 | ND |
| 2020-04-28 | 2020036602 | ND |
| 2021-04-27 | 2021107539 | ND |
| 2022-09-20 | 2209C26-001 | ND |
| 2023-08-23 | 2308D69-001 | ND |