p-Dichlorobenzene
City of Houston Willow Chase
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 | N/A | 0 | 0 | N/A |
2015 | ND | 4 | 0 | ND |
2016 | ND | 4 | 0 | ND |
2017 | ND | 4 | 0 | ND |
2018 | ND | 4 | 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 |
---|---|---|
2015-05-29 | AC93893 | ND |
2015-05-29 | AC93899 | ND |
2015-05-29 | AC93891 | ND |
2015-05-29 | AC93875 | ND |
2016-03-03 | AD26935 | ND |
2016-03-03 | AD26933 | ND |
2016-03-03 | AD26925 | ND |
2016-03-03 | AD26929 | ND |
2017-03-02 | AD73126 | ND |
2017-03-02 | AD73122 | ND |
2017-05-31 | AD86149 | ND |
2017-05-31 | AD86147 | ND |
2018-04-11 | AE22081 | ND |
2018-04-11 | AE22085 | ND |
2018-04-11 | AE22055 | ND |
2018-04-11 | AE22057 | ND |
2019-02-28 | AE56578 | ND |
2019-02-28 | AE56614 | ND |
2019-02-28 | AE56582 | ND |
2019-02-28 | AE56580 | ND |