p-Dichlorobenzene
Central City, City of
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 | ND | 4 | 0 | ND |
| 2015 | ND | 10 | 0 | ND |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 4 | 0 | ND |
| 2018 | ND | 3 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2014-01-27 | 278474 | ND |
| 2014-04-07 | 293471 | ND |
| 2014-07-07 | 309736 | ND |
| 2014-10-06 | 328592 | ND |
| 2015-01-12 | 343320 | ND |
| 2015-02-02 | 343321 | ND |
| 2015-04-06 | 353634 | ND |
| 2015-05-04 | 353467 | ND |
| 2015-07-06 | 371015 | ND |
| 2015-10-05 | 391869 | ND |
| 2015-11-16 | 391872 | ND |
| 2015-11-16 | 391873 | ND |
| 2015-11-16 | 391871 | ND |
| 2015-11-16 | 391870 | ND |
| 2016-01-19 | ND | |
| 2016-04-04 | ND | |
| 2016-07-05 | ND | |
| 2016-10-17 | ND | |
| 2017-03-06 | ND | |
| 2017-06-12 | ND | |
| 2017-09-11 | ND | |
| 2017-10-10 | ND | |
| 2018-02-20 | 530736 | ND |
| 2018-05-21 | 541763 | ND |
| 2018-11-27 | 586677 | ND |