p-Dichlorobenzene
Duncannon Municipal Water
p-Dichlorobenzene is a carcinogenic insecticide used in mothballs, and added to deodorant blocks made for trash cans and toilets. Long-term exposure can cause liver damage and kidney problems.
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 | 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
EWG Health Guideline: 6 ppb
The EWG Health Guideline of 6 ppb for p-dichlorobenzene was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.
EPA Maximum Contaminant
Level (MCL): 75 ppb
The legal limit for p-dichlorobenzene, established in 1987, was based on toxicity studies conducted in laboratory animals in the 1980s. This limit may not fully protect against the risk of cancer due to p-dichlorobenzene exposure.
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 | 21991365.00 | ND |
| 2020-03-30 | 21991366.00 | ND |
| 2020-03-30 | 21991367.00 | ND |
| 2020-08-04 | 22967118.00 | ND |
| 2021-02-15 | 24027739.00 | ND |
| 2021-03-08 | 24214572.00 | ND |
| 2021-03-22 | 24214639.00 | ND |
| 2021-06-01 | 24798981.00 | ND |
| 2021-08-03 | 25189160.00 | ND |
| 2021-12-28 | 25914147.00 | ND |
| 2022-10-26 | 27795517.00 | ND |
| 2023-07-31 | 29465058.00 | ND |
| 2023-07-31 | 29465027.00 | ND |
| 2023-07-31 | 29465078.00 | ND |
| 2023-07-31 | 29465007.00 | ND |