p-Dichlorobenzene
Montmorenci Water District
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 | 4 | 0 | ND |
| 2019 | ND | 4 | 0 | ND |
| 2020 | ND | 4 | 0 | ND |
| 2021 | ND | 4 | 0 | ND |
| 2022 | ND | 5 | 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 |
|---|---|---|
| 2018-02-27 | AE08322 | ND |
| 2018-05-23 | AE12655 | ND |
| 2018-08-22 | AE17063 | ND |
| 2018-11-13 | AE21220 | ND |
| 2019-02-20 | AE26033 | ND |
| 2019-04-30 | AE29543 | ND |
| 2019-08-27 | AE36167 | ND |
| 2019-11-05 | AE39706 | ND |
| 2020-01-14 | AE42850 | ND |
| 2020-04-08 | AE47044 | ND |
| 2020-08-25 | AE53392 | ND |
| 2020-10-07 | AE55472 | ND |
| 2021-02-03 | AE60574 | ND |
| 2021-04-07 | AE63774 | ND |
| 2021-08-25 | AE71041 | ND |
| 2021-11-09 | AE74852 | ND |
| 2022-02-23 | AE79524 | ND |
| 2022-04-07 | AE81832 | ND |
| 2022-04-07 | AE81833 | ND |
| 2022-08-24 | AE88862 | ND |
| 2022-11-02 | AE92454 | ND |
| 2023-02-01 | AE96329 | ND |
| 2023-04-05 | AE99712 | ND |
| 2023-10-04 | AF09676 | ND |