p-Dichlorobenzene
City of Florence
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 | 2 | 0 | ND |
| 2015 | ND | 1 | 0 | ND |
| 2016 | ND | 9 | 0 | ND |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 1 | 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 |
|---|---|---|
| 2014-05-27 | AD40317 | ND |
| 2014-05-27 | AD40319 | ND |
| 2015-03-17 | AD53072 | ND |
| 2016-03-29 | AD73324 | ND |
| 2016-03-29 | AD73326 | ND |
| 2016-03-29 | AD73329 | ND |
| 2016-03-29 | AD73328 | ND |
| 2016-03-29 | AD73331 | ND |
| 2016-03-29 | AD73330 | ND |
| 2016-03-29 | AD73332 | ND |
| 2016-05-26 | AD76536 | ND |
| 2016-05-26 | AD76537 | ND |
| 2017-02-01 | AD89158 | ND |
| 2018-01-30 | AE06829 | ND |
| 2019-01-15 | AE24119 | ND |