p-Dichlorobenzene
Geary
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 |
|---|---|---|---|---|
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 4 | 0 | ND |
| 2018 | ND | 4 | 0 | ND |
| 2019 | ND | 3 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
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 |
|---|---|---|
| 2017-02-01 | SDWA-1117854-00 | ND |
| 2017-02-01 | SDWA-1117855-00 | ND |
| 2017-09-05 | SDWA-1183742-00 | ND |
| 2017-12-05 | SDWA-1214303-00 | ND |
| 2018-01-30 | SDWA-1228010-00 | ND |
| 2018-04-04 | SDWA-1251685-00 | ND |
| 2018-07-10 | SDWA-1280192-00 | ND |
| 2018-10-19 | SDWA-1313571-03 | ND |
| 2019-02-06 | SDWA-1338860-00 | ND |
| 2019-04-02 | SDWA-1361027-00 | ND |
| 2019-08-05 | SDWA-1392180-00 | ND |