p-Dichlorobenzene
Thomas Cove
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 | 2 | 0 | ND |
| 2015 | ND | 2 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 5 | 0 | ND |
| 2019 | ND | 6 | 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 |
|---|---|---|
| 2014-09-30 | L5153605-1 VOC | ND |
| 2014-10-21 | L5242402-1 VOC | ND |
| 2015-03-26 | L5486345-VOC | ND |
| 2015-05-04 | L5530433-1-VOC | ND |
| 2016-09-23 | L6372290-1 VOC | ND |
| 2016-09-23 | L6372174-1 VOC | ND |
| 2017-02-17 | L6635059-1 VOC | ND |
| 2017-02-17 | L6568639-1 VOC | ND |
| 2018-03-28 | 8030875-01 VOC | ND |
| 2018-03-28 | 8030880-01 VOC | ND |
| 2018-07-06 | 8071605-01 VOC | ND |
| 2018-07-06 | 8071604-01 VOC | ND |
| 2018-10-04 | 8101778-01 VOC | ND |
| 2019-01-08 | 8124644-01 SUVO | ND |
| 2019-01-23 | 8124645-01 SUVO | ND |
| 2019-04-09 | 9042041-01 SUVO | ND |
| 2019-04-09 | 9042040-01 SUVO | ND |
| 2019-06-25 | 9055333-01 VOC | ND |
| 2019-06-25 | 9055337-01 VOC | ND |