1,1-Dichloroethylene
Cal Am - Dunnigan
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 |
|---|---|---|---|---|
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 2 | 0 | ND |
| 2023 | ND | 4 | 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 |
|---|---|---|
| 2018-05-08 | CA5700712_001_001-201805081000 | ND |
| 2019-08-14 | CA5700712_001_001-201908141300 | ND |
| 2021-08-12 | CA5700712_011_011-202108121008 | ND |
| 2022-03-17 | CA5700712_001_001-202203171130 | ND |
| 2022-08-23 | CA5700712_050_050-202208230900 | ND |
| 2023-01-17 | CA5700712_050_050-202301171100 | ND |
| 2023-05-08 | CA5700712_050_050-202305081020 | ND |
| 2023-08-03 | CA5700712_050_050-202308031050 | ND |
| 2023-11-08 | CA5700712_050_050-202311080940 | ND |