p-Dichlorobenzene
City of Westminster
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | ND | 4 | 0 | ND |
| 2015 | ND | 4 | 0 | ND |
| 2016 | ND | 6 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 4 | 0 | ND |
| 2019 | ND | 9 | 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 |
|---|---|---|
| 2014-07-14 | 0060015_02_00146 | ND |
| 2014-07-14 | 0060015_03_00146 | ND |
| 2014-07-14 | 0060015_04_00146 | ND |
| 2014-12-10 | 0060015_01_98172 | ND |
| 2015-08-26 | E16000789004 | ND |
| 2015-08-26 | E16000789006 | ND |
| 2015-11-18 | E16002173010 | ND |
| 2015-12-15 | 104745 | ND |
| 2016-09-08 | E17001059012 | ND |
| 2016-09-08 | E17001059001 | ND |
| 2016-09-08 | E17001059008 | ND |
| 2016-09-08 | E17001059006 | ND |
| 2016-09-08 | E17001059004 | ND |
| 2016-12-20 | 112032 | ND |
| 2017-01-31 | E17002937001 | ND |
| 2017-12-18 | 118938 | ND |
| 2018-02-27 | 0060015-10022718 | ND |
| 2018-05-14 | E18004108001 | ND |
| 2018-09-11 | E19000886001 | ND |
| 2018-12-04 | 127042 | ND |
| 2019-06-13 | E19004289008 | ND |
| 2019-06-13 | E19004289010 | ND |
| 2019-07-31 | E20000430010 | ND |
| 2019-07-31 | E20000430012 | ND |
| 2019-07-31 | E20000430001 | ND |
| 2019-07-31 | E20000430006 | ND |
| 2019-07-31 | E20000430008 | ND |
| 2019-11-07 | E20001794001 | ND |
| 2019-12-12 | 134618 | ND |