p-Dichlorobenzene
Hills & Dales
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 | 2 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 4 | 0 | ND |
| 2022 | ND | 1 | 0 | ND |
| 2023 | ND | 2 | 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 |
|---|---|---|
| 2018-10-31 | AE45068 | ND |
| 2018-10-31 | AE45070 | ND |
| 2019-12-17 | AE92707 | ND |
| 2019-12-17 | AE92709 | ND |
| 2020-12-02 | AF36275 | ND |
| 2020-12-02 | AF36283 | ND |
| 2021-05-18 | AF54403 | ND |
| 2021-05-18 | AF54405 | ND |
| 2021-09-07 | AF68995 | ND |
| 2021-11-15 | AF76649 | ND |
| 2022-12-20 | AG22372 | ND |
| 2023-10-25 | AG61061 | ND |
| 2023-10-25 | AG61063 | ND |