p-Dichlorobenzene
Deforest Waterworks
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 | 2 | 0 | ND |
| 2020 | ND | 4 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 1 | 0 | ND |
| 2023 | ND | 12 | 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 |
|---|---|---|
| 2018-03-13 | 1044928 | ND |
| 2018-03-13 | 1044929 | ND |
| 2018-08-29 | 404007001 | ND |
| 2019-06-19 | 1129331 | ND |
| 2019-06-19 | 1129330 | ND |
| 2020-06-02 | 1191108 | ND |
| 2020-06-02 | 1191109 | ND |
| 2020-06-02 | 1191107 | ND |
| 2020-06-02 | 1191092 | ND |
| 2021-04-13 | 1248611 | ND |
| 2021-04-13 | 1248610 | ND |
| 2022-07-26 | 1326226 | ND |
| 2023-03-21 | 669283001 | ND |
| 2023-03-21 | 669282001 | ND |
| 2023-06-08 | 682745001 | ND |
| 2023-06-08 | 682743001 | ND |
| 2023-07-25 | 691015001 | ND |
| 2023-07-25 | 691015002 | ND |
| 2023-09-07 | 698953003 | ND |
| 2023-09-07 | 698953001 | ND |
| 2023-09-19 | 701205001 | ND |
| 2023-09-19 | 701208001 | ND |
| 2023-12-12 | 714406001 | ND |
| 2023-12-12 | 714406002 | ND |