p-Dichlorobenzene
Guymon
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 | 2 | 0 | ND |
| 2015 | ND | 9 | 0 | ND |
| 2016 | ND | 1 | 0 | ND |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 4 | 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 |
|---|---|---|
| 2014-03-11 | 06545 | ND |
| 2014-05-14 | 06877 | ND |
| 2015-05-20 | 055011.001 | ND |
| 2015-08-12 | 060979.004 | ND |
| 2015-08-12 | 060979.003 | ND |
| 2015-08-12 | 060979.002 | ND |
| 2015-08-12 | 060979.001 | ND |
| 2015-09-01 | 063100.003 | ND |
| 2015-09-01 | 063100.004 | ND |
| 2015-09-01 | 063100.002 | ND |
| 2015-09-01 | 063100.001 | ND |
| 2016-09-20 | SDWA-1072180-00 | ND |
| 2017-09-12 | SDWA-1192010-00 | ND |
| 2018-01-09 | SDWA-1226132-00 | ND |
| 2019-08-20 | BH20077-01 | ND |
| 2019-11-04 | BK05134-01 | ND |
| 2019-11-04 | BK05134-03 | ND |
| 2019-11-04 | BK05134-02 | ND |