1,1-Dichloroethylene
Chesswood Water System
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
7
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 | 1 | 0 | ND |
| 2019 | ND | 2 | 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
| Date | Lab ID | Result |
|---|---|---|
| 2018-03-29 | AE20608 | ND |
| 2019-02-19 | AE54856 | ND |
| 2019-06-13 | AE70617 | ND |
| 2020-06-03 | AF13886 | ND |
| 2021-06-16 | AF58423 | ND |
| 2022-03-30 | AF91262 | ND |
| 2023-06-01 | AG42786 | ND |