p-Dichlorobenzene
City of Morgan Hill
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 | 5 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 7 | 0 | ND |
| 2017 | ND | 5 | 0 | ND |
| 2018 | ND | 4 | 0 | ND |
| 2019 | ND | 11 | 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 |
|---|---|---|
| 2014-05-12 | 5810-032-0920 | ND |
| 2014-05-12 | 5810-017-1015 | ND |
| 2014-05-28 | 5810-012-0930 | ND |
| 2014-06-23 | 5810-010-0815 | ND |
| 2014-09-10 | 5810-043-0800 | ND |
| 2015-05-18 | 5810-002-0900 | ND |
| 2015-05-27 | 5810-043-0755 | ND |
| 2015-07-21 | 1610-001-1010 | ND |
| 2016-05-09 | 1610-015-0930 | ND |
| 2016-05-09 | 1610-008-0815 | ND |
| 2016-05-09 | 1610-016-0730 | ND |
| 2016-05-09 | 1610-009-0900 | ND |
| 2016-05-16 | 1610-040-0830 | ND |
| 2016-05-16 | 1610-043-0740 | ND |
| 2016-09-26 | 1610-043-0755 | ND |
| 2017-05-08 | 1610-017-0900 | ND |
| 2017-05-08 | 1610-032-0800 | ND |
| 2017-05-22 | 1610-012-0720 | ND |
| 2017-08-14 | 1610-043-1000 | ND |
| 2017-11-27 | 1610-043-0750 | ND |
| 2018-04-23 | 1610-043-0730 | ND |
| 2018-07-16 | 1610-043-0730 | ND |
| 2018-10-30 | 1610-001-0930 | ND |
| 2018-11-06 | 1610-043-0925 | ND |
| 2019-02-11 | 1610-043-0745 | ND |
| 2019-02-11 | 1610-007-0745 | ND |
| 2019-04-23 | 1610-043-0700 | ND |
| 2019-05-07 | 1610-040-0715 | ND |
| 2019-05-07 | 1610-009-0800 | ND |
| 2019-05-07 | 1610-043-0630 | ND |
| 2019-05-07 | 1610-016-0930 | ND |
| 2019-05-07 | 1610-008-1000 | ND |
| 2019-05-07 | 1610-015-0830 | ND |
| 2019-08-05 | 1610-043-0700 | ND |
| 2019-11-12 | 1610-043-0710 | ND |