1,1-Dichloroethylene
Mountain Regional Water Special Service District
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
57
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 | 5 | 0 | ND |
| 2019 | ND | 13 | 0 | ND |
| 2020 | ND | 8 | 0 | ND |
| 2021 | ND | 6 | 0 | ND |
| 2022 | ND | 17 | 0 | ND |
| 2023 | ND | 8 | 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 | Result |
|---|---|
| 2018-03-20 | ND |
| 2018-06-06 | ND |
| 2018-06-20 | ND |
| 2018-08-23 | ND |
| 2018-09-05 | ND |
| 2019-01-03 | ND |
| 2019-01-03 | ND |
| 2019-01-03 | ND |
| 2019-01-03 | ND |
| 2019-01-24 | ND |
| 2019-01-24 | ND |
| 2019-01-24 | ND |
| 2019-02-25 | ND |
| 2019-02-25 | ND |
| 2019-02-25 | ND |
| 2019-03-20 | ND |
| 2019-04-18 | ND |
| 2019-11-14 | ND |
| 2020-02-27 | ND |
| 2020-03-02 | ND |
| 2020-07-14 | ND |
| 2020-07-14 | ND |
| 2020-09-15 | ND |
| 2020-09-21 | ND |
| 2020-12-04 | ND |
| 2020-12-30 | ND |
| 2021-03-16 | ND |
| 2021-06-03 | ND |
| 2021-06-08 | ND |
| 2021-08-04 | ND |
| 2021-12-08 | ND |
| 2021-12-08 | ND |
| 2022-02-17 | ND |
| 2022-02-17 | ND |
| 2022-02-17 | ND |
| 2022-02-17 | ND |
| 2022-05-04 | ND |
| 2022-05-05 | ND |
| 2022-05-05 | ND |
| 2022-05-05 | ND |
| 2022-08-04 | ND |
| 2022-08-04 | ND |
| 2022-08-04 | ND |
| 2022-08-04 | ND |
| 2022-08-04 | ND |
| 2022-09-07 | ND |
| 2022-12-06 | ND |
| 2022-12-06 | ND |
| 2022-12-07 | ND |
| 2023-03-16 | ND |
| 2023-06-21 | ND |
| 2023-09-21 | ND |
| 2023-11-06 | ND |
| 2023-11-06 | ND |
| 2023-11-06 | ND |
| 2023-12-11 | ND |
| 2023-12-11 | ND |