p-Dichlorobenzene
City of Rohnert Park
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 |
|---|---|---|---|---|
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | ND | 1 | 0 | ND |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 8 | 0 | ND |
| 2018 | ND | 14 | 0 | ND |
| 2019 | ND | 8 | 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 |
|---|---|---|
| 2015-10-27 | 9541-031-0903 | ND |
| 2017-07-18 | 1610-041-1100 | ND |
| 2017-07-18 | 1610-008-1000 | ND |
| 2017-07-18 | 1610-009-1030 | ND |
| 2017-07-18 | 1610-010-0855 | ND |
| 2017-07-18 | 1610-011-0831 | ND |
| 2017-07-18 | 1610-014-0920 | ND |
| 2017-07-18 | 1610-016-0800 | ND |
| 2017-08-01 | 1610-044-0905 | ND |
| 2018-05-15 | 1610-002-0918 | ND |
| 2018-05-15 | 1610-039-0945 | ND |
| 2018-05-15 | 1610-035-1040 | ND |
| 2018-05-15 | 1610-034-1031 | ND |
| 2018-05-15 | 1610-033-1050 | ND |
| 2018-05-15 | 1610-030-0850 | ND |
| 2018-05-15 | 1610-029-0830 | ND |
| 2018-05-15 | 1610-018-0815 | ND |
| 2018-05-15 | 1610-005-0902 | ND |
| 2018-05-15 | 1610-004-0930 | ND |
| 2018-05-15 | 1610-001-0800 | ND |
| 2018-05-17 | 1610-021-0830 | ND |
| 2018-05-17 | 1610-040-0930 | ND |
| 2018-11-06 | 1610-006-0900 | ND |
| 2019-03-05 | 1610-013-1030 | ND |
| 2019-09-10 | 1610-021-0905 | ND |
| 2019-09-10 | 1610-018-0835 | ND |
| 2019-09-10 | 1610-006-0820 | ND |
| 2019-09-10 | 1610-033-0835 | ND |
| 2019-09-10 | 1610-034-0937 | ND |
| 2019-09-10 | 1610-035-0950 | ND |
| 2019-09-10 | 1610-004-0914 | ND |