p-Dichlorobenzene
Pennsylvania American Water Company Yardley
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 | 3 | 0 | ND |
| 2019 | ND | 3 | 0 | ND |
| 2020 | ND | 7 | 0 | ND |
| 2021 | ND | 7 | 0 | ND |
| 2022 | ND | 8 | 0 | ND |
| 2023 | ND | 7 | 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 |
|---|---|---|
| 2018-04-11 | 39062701 | ND |
| 2018-08-14 | 40630801 | ND |
| 2018-08-14 | 40630201 | ND |
| 2019-04-04 | 43649801 | ND |
| 2019-08-22 | 45815901 | ND |
| 2019-08-22 | 45816001 | ND |
| 2020-01-06 | 21487034.00 | ND |
| 2020-04-09 | 22005627.00 | ND |
| 2020-04-09 | 22005606.00 | ND |
| 2020-07-09 | 22591144.00 | ND |
| 2020-08-06 | 22780437.00 | ND |
| 2020-08-06 | 22780458.00 | ND |
| 2020-10-12 | 23166527.00 | ND |
| 2021-01-06 | 23695981.00 | ND |
| 2021-04-06 | 24230991.00 | ND |
| 2021-04-06 | 24230970.00 | ND |
| 2021-07-07 | 24812015.00 | ND |
| 2021-08-02 | 25004499.00 | ND |
| 2021-08-02 | 25004520.00 | ND |
| 2021-10-04 | 25387732.00 | ND |
| 2022-01-03 | 25926361.00 | ND |
| 2022-03-09 | 26272426.00 | ND |
| 2022-04-06 | 26447221.00 | ND |
| 2022-04-06 | 26447246.00 | ND |
| 2022-07-12 | 27020341.00 | ND |
| 2022-08-04 | 27216461.00 | ND |
| 2022-08-04 | 27216422.00 | ND |
| 2022-10-13 | 27625714.00 | ND |
| 2023-01-03 | 28156617.00 | ND |
| 2023-04-17 | 28684437.00 | ND |
| 2023-04-17 | 28684416.00 | ND |
| 2023-07-12 | 29285444.00 | ND |
| 2023-08-09 | 29478512.00 | ND |
| 2023-08-09 | 29478491.00 | ND |
| 2023-10-11 | 29870739.00 | ND |