p-Dichlorobenzene
Newhall Cwd-castaic
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 | 3 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 3 | 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 |
|---|---|---|
| 2014-02-13 | 9590-008-0925 | ND |
| 2014-02-13 | 9590-002-0918 | ND |
| 2014-02-13 | 9590-001-0904 | ND |
| 2015-02-19 | 9590-001-1020 | ND |
| 2015-02-19 | 9590-002-1110 | ND |
| 2015-02-19 | 9590-008-1050 | ND |
| 2016-02-18 | 9590-001-1120 | ND |
| 2016-02-18 | 9590-008-1040 | ND |
| 2016-02-18 | 9590-002-1030 | ND |
| 2017-02-16 | 9590-002-0919 | ND |
| 2017-02-16 | 9590-008-0931 | ND |
| 2017-11-02 | 9590-001-1040 | ND |
| 2018-04-05 | 2104-002-0935 | ND |
| 2018-04-05 | 2104-008-0956 | ND |
| 2018-04-05 | 2104-001-0905 | ND |
| 2019-04-18 | 9590-002-0920 | ND |
| 2019-04-18 | 9590-008-0910 | ND |
| 2019-04-18 | 9590-001-0850 | ND |