1,1-Dichloroethylene
Star Sewer and Water District Water System
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
12
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 | N/A | 0 | 0 | N/A |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 6 | 0 | ND |
| 2022 | ND | 2 | 0 | ND |
| 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 |
|---|---|---|
| 2020-10-20 | V2052526 | ND |
| 2020-10-20 | V2052524 | ND |
| 2021-02-03 | V2105166 | ND |
| 2021-02-03 | V2105168 | ND |
| 2021-05-05 | V2121353 | ND |
| 2021-05-05 | V2121351 | ND |
| 2021-07-07 | V2134007 | ND |
| 2021-07-07 | V2134009 | ND |
| 2022-11-02 | V2254682 | ND |
| 2022-11-02 | V2254681 | ND |
| 2023-07-13 | V2314384-02 | ND |
| 2023-07-13 | V2314384-03 | ND |