1,1-Dichloroethylene
Lake Delton Waterworks
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
16
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 | 3 | 0 | ND |
| 2020 | ND | 7 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | ND | 5 | 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 |
|---|---|---|
| 2019-06-19 | 1129378 | ND |
| 2019-07-22 | 1135927 | ND |
| 2019-12-10 | 1164822 | ND |
| 2020-04-20 | 409868 | ND |
| 2020-05-28 | 424672 | ND |
| 2020-05-28 | 424675 | ND |
| 2020-05-28 | 424681 | ND |
| 2020-06-02 | 426799 | ND |
| 2020-06-02 | 426789 | ND |
| 2020-06-02 | 426786 | ND |
| 2021-01-20 | 526112 | ND |
| 2023-03-20 | 1301274 | ND |
| 2023-03-20 | 1301276 | ND |
| 2023-04-19 | 1316618 | ND |
| 2023-04-20 | 1316620 | ND |
| 2023-04-20 | 1316622 | ND |