p-Dichlorobenzene
North Park PWD
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 | 6 | 0 | ND |
| 2015 | ND | 4 | 0 | ND |
| 2016 | ND | 8 | 0 | ND |
| 2017 | ND | 7 | 0 | ND |
| 2018 | ND | 9 | 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 |
|---|---|---|
| 2014-01-13 | 4012044-02 | ND |
| 2014-01-13 | 4012044-03 | ND |
| 2014-01-13 | 4012044-04 | ND |
| 2014-01-13 | 4012044-01 | ND |
| 2014-02-03 | 4020627-01 | ND |
| 2014-02-03 | 4020627-02 | ND |
| 2015-02-02 | 5020857-02 | ND |
| 2015-02-02 | 5020857-01 | ND |
| 2015-04-06 | 5041658-02 | ND |
| 2015-04-06 | 5041658-04 | ND |
| 2016-01-04 | 6011059-01 | ND |
| 2016-01-11 | 6012037-01 | ND |
| 2016-04-04 | 6041263-01 | ND |
| 2016-04-04 | 6041263-02 | ND |
| 2016-07-12 | 6072555-01 | ND |
| 2016-07-12 | 6072555-02 | ND |
| 2016-10-04 | 6101157-02 | ND |
| 2016-10-04 | 6101157-01 | ND |
| 2017-01-17 | 7012788-01 | ND |
| 2017-01-17 | 7012788-03 | ND |
| 2017-01-17 | 7012788-02 | ND |
| 2017-04-03 | 7041052-01 | ND |
| 2017-04-03 | 7041052-02 | ND |
| 2017-10-02 | 7100444-01 | ND |
| 2017-10-02 | 7100444-03 | ND |
| 2018-01-08 | 8011248-02 | ND |
| 2018-01-08 | 8011248-01 | ND |
| 2018-03-14 | 18C0365-01_02 | ND |
| 2018-05-07 | 8051445-02 | ND |
| 2018-05-07 | 8051445-04 | ND |
| 2018-08-06 | 8081292-01 | ND |
| 2018-08-06 | 8081292-03 | ND |
| 2018-11-05 | 8110950-01 | ND |
| 2018-11-05 | 8110950-02 | ND |
| 2019-01-22 | 9013510-01 | ND |
| 2019-01-22 | 9013510-02 | ND |
| 2019-04-08 | 9042183-01 | ND |
| 2019-04-08 | 9042183-02 | ND |
| 2019-07-08 | 9071708-01 | ND |
| 2019-07-08 | 9071708-02 | ND |
| 2019-12-18 | 9123770-02 | ND |
| 2019-12-18 | 9123770-01 | ND |