p-Dichlorobenzene
Pennsylvania American Royersford
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 | 4 | 0 | ND |
| 2019 | ND | 4 | 0 | ND |
| 2020 | ND | 5 | 0 | ND |
| 2021 | ND | 6 | 0 | ND |
| 2022 | ND | 5 | 0 | ND |
| 2023 | ND | 5 | 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 | 39073401 | ND |
| 2018-04-11 | 39072901 | ND |
| 2018-04-11 | 39074201 | ND |
| 2018-04-11 | 39073001 | ND |
| 2019-04-08 | 43660501 | ND |
| 2019-04-08 | 43660601 | ND |
| 2019-04-08 | 43659301 | ND |
| 2019-04-23 | 43659401 | ND |
| 2020-04-02 | 22016189.00 | ND |
| 2020-04-02 | 22016073.00 | ND |
| 2020-04-02 | 22016145.00 | ND |
| 2020-04-02 | 22016168.00 | ND |
| 2020-04-02 | 22016124.00 | ND |
| 2021-04-01 | 24241262.00 | ND |
| 2021-04-01 | 24241283.00 | ND |
| 2021-04-01 | 24241306.00 | ND |
| 2021-08-05 | 25016527.00 | ND |
| 2021-10-14 | 25398540.00 | ND |
| 2021-11-11 | 25582452.00 | ND |
| 2022-02-09 | 26111848.00 | ND |
| 2022-04-14 | 26458196.00 | ND |
| 2022-04-14 | 26458175.00 | ND |
| 2022-04-14 | 26458219.00 | ND |
| 2022-05-12 | 26641717.00 | ND |
| 2023-04-19 | 28695811.00 | ND |
| 2023-04-19 | 28695879.00 | ND |
| 2023-04-19 | 28695790.00 | ND |
| 2023-04-19 | 28695832.00 | ND |
| 2023-04-19 | 28695853.00 | ND |