p-Dichlorobenzene
Gonzales County Water Supply Corporation
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 | 3 | 0 | ND |
2015 | ND | 5 | 0 | ND |
2016 | ND | 3 | 0 | ND |
2017 | ND | 3 | 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 |
---|---|---|
2014-02-20 | AC43865 | ND |
2014-06-05 | AC56103 | ND |
2014-09-05 | AC66060 | ND |
2015-02-04 | AC79291 | ND |
2015-02-04 | AC79275 | ND |
2015-02-04 | AC79273 | ND |
2015-02-04 | AC79281 | ND |
2015-07-22 | AD00644 | ND |
2016-01-19 | AD18620 | ND |
2016-01-19 | AD18652 | ND |
2016-09-09 | AD49182 | ND |
2017-03-13 | AD75502 | ND |
2017-03-13 | AD75498 | ND |
2017-03-13 | AD75500 | ND |
2018-02-08 | AE13037 | ND |
2018-03-12 | AE17864 | ND |
2018-03-12 | AE17882 | ND |
2018-03-12 | AE17842 | ND |
2019-01-09 | AE49237 | ND |
2019-01-09 | AE49241 | ND |