p-Dichlorobenzene
Boh-nak Mobile Home Park
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 | 0.150 ppb | 4 | 1 | ND - 0.600 ppb |
| 2015 | ND | 4 | 0 | ND |
| 2016 | 0.125 ppb | 4 | 1 | ND - 0.500 ppb |
| 2017 | 0.135 ppb | 4 | 1 | ND - 0.540 ppb |
| 2018 | 0.338 ppb | 4 | 2 | ND - 0.780 ppb |
| 2019 | 0.128 ppb | 4 | 1 | ND - 0.510 ppb |
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 |
|---|---|---|
| 2014-03-06 | 0220218_02_00395 | 0.600 ppb |
| 2014-06-19 | 0220218_02_05503 | ND |
| 2014-08-14 | 0220218_02_00656 | ND |
| 2014-10-21 | 0220218_02_00149 | ND |
| 2015-02-12 | 0220218_02_00253 | ND |
| 2015-05-14 | E15003565001 | ND |
| 2015-07-01 | E16000030001 | ND |
| 2015-10-07 | E16001549004 | ND |
| 2016-01-14 | E16002706001 | ND |
| 2016-06-09 | E16004706001 | ND |
| 2016-07-14 | E17000171001 | ND |
| 2016-10-27 | E17001883006 | 0.500 ppb |
| 2017-02-02 | E17003019001 | ND |
| 2017-04-13 | E17004068001 | ND |
| 2017-07-25 | E18000300001 | 0.540 ppb |
| 2017-10-12 | E18001534001 | ND |
| 2018-02-01 | E18002794001 | ND |
| 2018-05-03 | E18003986001 | ND |
| 2018-07-26 | E19000268001 | 0.780 ppb |
| 2018-11-08 | E19001598001 | 0.570 ppb |
| 2019-03-28 | E19003182001 | ND |
| 2019-06-06 | E19004198001 | 0.510 ppb |
| 2019-09-05 | E20000965001 | ND |
| 2019-10-24 | E20001624001 | ND |