p-Dichlorobenzene
Tempe Water Supply Corporation 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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2012 | ND | 2 | 0 | ND |
| 2013 | ND | 2 | 0 | ND |
| 2014 | ND | 3 | 0 | ND |
| 2015 | ND | 6 | 0 | ND |
| 2016 | ND | 4 | 0 | ND |
| 2017 | 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 |
|---|---|---|
| 2012-02-29 | AB82330 | ND |
| 2012-02-29 | AB82328 | ND |
| 2013-02-26 | AC11569 | ND |
| 2013-02-26 | AC11571 | ND |
| 2014-01-15 | AC39002 | ND |
| 2014-01-15 | AC38994 | ND |
| 2014-01-15 | AC38992 | ND |
| 2015-02-24 | AC81713 | ND |
| 2015-02-24 | AC81699 | ND |
| 2015-02-24 | AC81709 | ND |
| 2015-02-24 | AC81697 | ND |
| 2015-09-10 | AD06572 | ND |
| 2015-12-03 | AD15456 | ND |
| 2016-02-25 | AD25795 | ND |
| 2016-02-25 | AD25791 | ND |
| 2016-02-25 | AD25783 | ND |
| 2016-02-25 | AD25785 | ND |
| 2017-06-01 | AD86432 | ND |
| 2017-06-01 | AD86412 | ND |
| 2017-06-01 | AD86408 | ND |
| 2017-06-01 | AD86426 | ND |