p-Dichlorobenzene
SBDNO County Service Area 64
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 | 7 | 0 | ND |
| 2015 | ND | 6 | 0 | ND |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2014-01-14 | 3761-005-1430 | ND |
| 2014-01-14 | 3761-004-1325 | ND |
| 2014-01-14 | 3761-002-1255 | ND |
| 2014-01-29 | 3761-005-1045 | ND |
| 2014-01-29 | 3761-004-1310 | ND |
| 2014-01-29 | 3761-002-1200 | ND |
| 2014-01-29 | 3761-001-1415 | ND |
| 2015-01-05 | 3761-002-1220 | ND |
| 2015-04-01 | 3761-001-1320 | ND |
| 2015-07-24 | 3761-006-1630 | ND |
| 2015-07-30 | 3761-006-1525 | ND |
| 2015-08-02 | 3761-006-0700 | ND |
| 2015-08-04 | 3761-006-0700 | ND |
| 2017-01-03 | 3761-005-1015 | ND |
| 2017-01-05 | 3761-004-0930 | ND |
| 2018-04-02 | 3761-002-1055 | ND |
| 2018-04-02 | 3761-001-1215 | ND |