p-Dichlorobenzene
US Army Aviation and Missile Command
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 | 2 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | 0.0843 ppb | 3 | 1 | ND - 0.253 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 |
|---|---|---|
| 2014-06-03 | 89906032014-1 | ND |
| 2014-06-03 | 89906032014-2 | ND |
| 2015-04-14 | 89904142015-1 | ND |
| 2015-04-14 | 89904142015-2 | ND |
| 2016-04-12 | 89904122016-1 | ND |
| 2016-04-12 | 89904122016-2 | ND |
| 2017-04-11 | 899041120171-2V | ND |
| 2017-04-11 | 899041120171-1V | ND |
| 2018-04-17 | 1804034-02 | ND |
| 2018-04-17 | 1804034-01 | ND |
| 2019-04-09 | 1904017-01 | 0.253 ppb |
| 2019-04-09 | 1904017-02 | ND |
| 2019-12-03 | 1912007-01 | ND |