1,1-Dichloroethylene
Cooper County Consolidated Public Water Supply District # 1
NOTE: Cooper County Consolidated Public Water Supply District # 1 purchases water from Boonville PWS which is required to test for 1,1-dichloroethylene. Sample information shown below was taken by Boonville PWS.
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
Samples
Samples exceeding legal limit (MCL)
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 | ND | 1 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 1 | 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
NOTE: Cooper County Consolidated Public Water Supply District # 1 purchases water from Boonville PWS which is required to test for 1,1-dichloroethylene. Sample information shown below was taken by Boonville PWS.
| Date | Lab ID | Result |
|---|---|---|
| 2018-07-11 | AD30366 | ND |
| 2019-01-29 | AD38364 | ND |
| 2020-01-28 | AD60336 | ND |
| 2021-01-14 | 2019918 | ND |
| 2022-01-12 | 2121478 | ND |
| 2023-01-18 | 2223068 | ND |