p-Dichlorobenzene
Hamburg Municipal Water&sewer Authority
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 | 1 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 1 | 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 |
|---|---|---|
| 2018-10-03 | 8007563-01 | ND |
| 2019-03-13 | 8017757-01 | ND |
| 2020-05-27 | 22259095.00 | ND |
| 2020-08-19 | 22841429.00 | ND |
| 2021-08-11 | 25064928.00 | ND |
| 2022-07-06 | 27080638.00 | ND |
| 2022-07-27 | 27279436.00 | ND |
| 2022-08-02 | 27279499.00 | ND |
| 2022-08-10 | 27279457.00 | ND |
| 2022-08-10 | 27279478.00 | ND |
| 2023-08-09 | 29542195.00 | ND |
| 2023-12-04 | 30283886.00 | ND |
| 2023-12-04 | 30283887.00 | ND |
| 2023-12-05 | 30283888.00 | ND |
| 2023-12-06 | 30283885.00 | ND |