p-Dichlorobenzene
Mercy Water Supply Corporation
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 | N/A | 0 | 0 | N/A |
2015 | ND | 3 | 0 | ND |
2016 | ND | 10 | 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
Date | Lab ID | Result |
---|---|---|
2015-04-07 | AC87526 | ND |
2015-04-07 | AC87520 | ND |
2015-04-07 | AC87516 | ND |
2016-01-14 | AD18249 | ND |
2016-01-14 | AD18293 | ND |
2016-01-14 | AD18247 | ND |
2016-01-14 | AD18299 | ND |
2016-01-14 | AD18245 | ND |
2016-04-04 | AD31669 | ND |
2016-07-29 | AD46459 | ND |
2016-09-24 | AD51176 | ND |
2016-11-07 | AD56823 | ND |
2016-11-07 | AD56809 | ND |
2017-07-26 | AD90855 | ND |
2017-07-26 | AD90853 | ND |
2017-10-09 | AD99854 | ND |
2017-10-09 | AD99850 | ND |
2018-04-03 | AE21053 | ND |
2018-04-03 | AE21049 | ND |
2018-04-03 | AE21047 | ND |
2018-04-03 | AE21051 | ND |
2019-03-28 | AE60490 | ND |
2019-03-28 | AE60492 | ND |
2019-03-28 | AE60494 | ND |
2019-03-28 | AE60496 | ND |