p-Dichlorobenzene
Metropolitan District Commission
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 | 3 | 0 | ND |
| 2021 | ND | 3 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 3 | 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 |
|---|---|---|
| 2018-07-16 | AE00927GE | ND |
| 2018-07-16 | AE00912GE | ND |
| 2018-07-16 | AE00911GE | ND |
| 2019-06-05 | AE29314GE | ND |
| 2019-06-05 | AE29313GE | ND |
| 2019-06-05 | AE29315GE | ND |
| 2020-06-02 | AE59301GE | ND |
| 2020-06-02 | AE59305GE | ND |
| 2020-06-02 | AE59302GE | ND |
| 2021-11-23 | V300107450 300107457 | ND |
| 2021-11-23 | V300107451 300107463 | ND |
| 2021-11-29 | V300109635 300109637 | ND |
| 2022-12-15 | V300287053 300287060 | ND |
| 2022-12-15 | V300287072 300287079 | ND |
| 2022-12-15 | V300287100 300287107 | ND |
| 2023-12-06 | V300456527 300456529 | ND |
| 2023-12-06 | V300456525 300456531 | ND |
| 2023-12-06 | V300456533 300456535 | ND |