1,1-Dichloroethylene
St Marys City
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
11
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 | 4 | 0 | ND |
| 2022 | ND | 4 | 0 | ND |
| 2023 | ND | 1 | 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 |
|---|---|---|
| 2020-02-04 | 20-12864-01B | ND |
| 2020-12-10 | 20-38617-01 | ND |
| 2021-02-17 | 21-13365-01B | ND |
| 2021-05-04 | 21-19251-01 | ND |
| 2021-08-31 | 21-30902-01 | ND |
| 2021-11-24 | 21-38305-01 | ND |
| 2022-02-08 | 22-13206-01B | ND |
| 2022-05-03 | 22-20920-01 | ND |
| 2022-08-30 | 22-33316-01 | ND |
| 2022-11-08 | 2207000-01 | ND |
| 2023-02-07 | 2304549-01B | ND |