p-Dichlorobenzene
Encinal Water Supply Corporation
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 | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 6 | 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 |
|---|---|---|
| 2018-07-19 | AE33973 | ND |
| 2018-07-19 | AE33965 | ND |
| 2019-09-26 | AE84864 | ND |
| 2019-12-11 | AE92154 | ND |
| 2020-03-24 | AF04315 | ND |
| 2020-03-24 | AF04317 | ND |
| 2020-03-24 | AF04319 | ND |
| 2020-06-08 | AF14872 | ND |
| 2020-07-20 | AF19932 | ND |
| 2020-12-10 | AF37297 | ND |
| 2021-08-04 | AF64835 | ND |
| 2021-08-04 | AF64837 | ND |
| 2021-12-22 | AF79284 | ND |
| 2022-09-29 | AG15510 | ND |
| 2022-09-29 | AG15512 | ND |
| 2022-09-29 | AG15514 | ND |
| 2023-09-14 | AG56310 | ND |
| 2023-09-14 | AG56314 | ND |
| 2023-09-14 | AG56318 | ND |