1,1-Dichloroethylene
Rancheritos Mutual Water Company
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
5
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 | N/A | 0 | 0 | N/A |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 1 | 0 | ND |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | ND | 2 | 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 |
|---|---|---|
| 2019-02-18 | CA3600200_003_003-201902181030 | ND |
| 2019-08-19 | CA3600200_001_001-201908190930 | ND |
| 2020-10-13 | CA3600200_002_002-202010131255 | ND |
| 2023-01-24 | CA3600200_003_003-202301241100 | ND |
| 2023-08-07 | CA3600200_001_001-202308071145 | ND |