p-Dichlorobenzene
Crofton, City of
NOTE: Crofton, City of purchases water from Cedar-Knox Rural Water Project which is required to test for p-dichlorobenzene. Sample information shown below was taken by Cedar-Knox Rural Water Project.
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 | 4 | 0 | ND |
| 2015 | ND | 4 | 0 | ND |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 4 | 0 | ND |
| 2018 | ND | 4 | 0 | ND |
| 2019 | ND | 4 | 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
NOTE: Crofton, City of purchases water from Cedar-Knox Rural Water Project which is required to test for p-dichlorobenzene. Sample information shown below was taken by Cedar-Knox Rural Water Project.
| Date | Lab ID | Result |
|---|---|---|
| 2014-01-21 | 283277 | ND |
| 2014-01-21 | 283275 | ND |
| 2014-01-21 | 283276 | ND |
| 2014-04-15 | 294786 | ND |
| 2014-04-15 | 294787 | ND |
| 2014-04-15 | 294788 | ND |
| 2014-07-07 | 309729 | ND |
| 2014-07-14 | 311929 | ND |
| 2014-07-14 | 311930 | ND |
| 2014-07-14 | 311931 | ND |
| 2014-10-14 | 330676 | ND |
| 2014-10-14 | 330675 | ND |
| 2014-10-14 | 330677 | ND |
| 2015-01-12 | 344873 | ND |
| 2015-04-13 | 357508 | ND |
| 2015-07-14 | 374507 | ND |
| 2015-08-04 | 381428 | ND |
| 2015-10-13 | 393510 | ND |
| 2016-01-11 | ND | |
| 2016-04-11 | ND | |
| 2016-07-11 | ND | |
| 2016-07-25 | ND | |
| 2016-10-12 | ND | |
| 2017-01-23 | ND | |
| 2017-04-10 | ND | |
| 2017-07-11 | ND | |
| 2017-07-17 | ND | |
| 2017-10-10 | ND | |
| 2018-01-09 | 532167 | ND |
| 2018-04-09 | 543814 | ND |
| 2018-07-10 | 561733 | ND |
| 2018-07-23 | 560148 | ND |
| 2018-10-10 | 578338 | ND |
| 2019-01-14 | 590611 | ND |
| 2019-04-08 | 600529 | ND |
| 2019-07-08 | 621229 | ND |
| 2019-07-08 | 622413 | ND |
| 2019-10-15 | 638237 | ND |