1,1-Dichloroethylene
Duncannon Municipal Water
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
18
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 | 2 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
| 2020 | ND | 4 | 0 | ND |
| 2021 | ND | 6 | 0 | ND |
| 2022 | ND | 1 | 0 | ND |
| 2023 | ND | 4 | 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 |
|---|---|---|
| 2018-08-22 | 8H23016-02 | ND |
| 2018-11-13 | 8K15056-01 | ND |
| 2019-08-19 | 9080661-01 | ND |
| 2020-03-30 | 21991371.00 | ND |
| 2020-03-30 | 21991372.00 | ND |
| 2020-03-30 | 21991373.00 | ND |
| 2020-08-04 | 22967120.00 | ND |
| 2021-02-15 | 24027741.00 | ND |
| 2021-03-08 | 24214574.00 | ND |
| 2021-03-22 | 24214641.00 | ND |
| 2021-06-01 | 24798983.00 | ND |
| 2021-08-03 | 25189162.00 | ND |
| 2021-12-28 | 25914149.00 | ND |
| 2022-10-26 | 27795519.00 | ND |
| 2023-07-31 | 29465059.00 | ND |
| 2023-07-31 | 29465028.00 | ND |
| 2023-07-31 | 29465079.00 | ND |
| 2023-07-31 | 29465008.00 | ND |