p-Dichlorobenzene
Delta City Water Association
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 | ND | 3 | 0 | ND |
| 2015 | ND | 4 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 2 | 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 |
|---|---|---|
| 2014-07-23 | 140724-003VO | ND |
| 2014-08-25 | 140826-011VO | ND |
| 2014-10-29 | 141030-001VO | ND |
| 2015-03-16 | 150317-003VO | ND |
| 2015-05-20 | 150521-012VO | ND |
| 2015-08-10 | 150811-034VO | ND |
| 2015-09-23 | 150924-011VO | ND |
| 2016-12-13 | 161214-010VO | ND |
| 2016-12-13 | 161214-011VO | ND |
| 2017-09-18 | 170919-019VO | ND |
| 2017-09-18 | 170919-020VO | ND |
| 2018-07-26 | 180727-003VO | ND |
| 2018-07-26 | 180727-004VO | ND |
| 2019-07-22 | 190723-013VO | ND |
| 2019-07-22 | 190723-014VO | ND |