p-Dichlorobenzene
Washington County Rural Water District 1
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | ND | 5 | 0 | ND |
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 | 2 | 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 |
---|---|---|
2014-07-28 | 160298 | ND |
2014-07-28 | 160299 | ND |
2014-07-28 | 160300 | ND |
2014-07-28 | 160301 | ND |
2014-07-28 | 160302 | ND |
2017-07-24 | 803103 | ND |
2017-07-31 | 808386 | ND |
2017-07-31 | 808388 | ND |
2017-07-31 | 808390 | ND |
2018-03-06 | 931679 | ND |
2018-05-14 | 970931 | ND |
2018-08-20 | 1029042 | ND |
2018-11-26 | 1081327 | ND |
2019-02-25 | 1126145 | ND |
2019-05-20 | 1158024 | ND |