p-Dichlorobenzene
Ponderosa S/d
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 | 3 | 0 | ND |
| 2021 | ND | 4 | 0 | ND |
| 2022 | ND | 4 | 0 | ND |
| 2023 | ND | 4 | 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 |
|---|---|---|
| 2018-04-12 | CB03472-01RE1 | ND |
| 2019-04-16 | CC04280-01 | ND |
| 2020-04-01 | CD03181-01 | ND |
| 2020-08-05 | CD12136-01 | ND |
| 2020-10-07 | CD13750-01 | ND |
| 2021-01-13 | CD18731-01 | ND |
| 2021-04-21 | CE02821-01 | ND |
| 2021-07-14 | CE07607-01 | ND |
| 2021-10-13 | CE12470-01 | ND |
| 2022-01-26 | CE17926-01 | ND |
| 2022-04-20 | CF02420-01 | ND |
| 2022-08-08 | CF07143-01 | ND |
| 2022-10-05 | CF12757-01 | ND |
| 2023-01-25 | 752-1983-1 | ND |
| 2023-04-26 | 37729_23-20811 | ND |
| 2023-08-15 | 37729_23-45203 | ND |
| 2023-10-18 | 37729_23-59288 | ND |