p-Dichlorobenzene
Laconia Water Works
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | ND | 1 | 0 | ND |
2015 | ND | 1 | 0 | ND |
2016 | 1.60 ppb | 4 | 2 | ND - 3.70 ppb |
2017 | 0.550 ppb | 2 | 1 | ND - 1.10 ppb |
2018 | ND | 1 | 0 | ND |
2019 | ND | 1 | 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 |
---|---|---|
2014-09-18 | A407848002 | ND |
2015-08-07 | A506476002 | ND |
2016-01-04 | B600025002 | 3.70 ppb |
2016-04-04 | B601610002 | 2.70 ppb |
2016-07-05 | B605155002 | ND |
2016-08-19 | B607790002 | ND |
2017-01-04 | B700039002 | 1.10 ppb |
2017-08-11 | B707019002 | ND |
2018-08-17 | B807141002 | ND |
2019-08-19 | B907498002 | ND |