There
are two main sources for the radon in your home's indoor air, the
soil and the water supply.
The radon in your water supply poses an inhalation risk and an ingestion risk. Research has shown that your risk of lung cancer from breathing radon in air is much larger than your risk of stomach cancer from swallowing water with radon in it. Most of your risk from radon in water comes from radon released into the air when water is used for showering and other household purposes.
Radon in your home's water is not usually a problem when its source is surface water (i.e. reservoir). A radon in water problem is more likely when its source is ground water, e.g. a private well or a public water supply system that uses ground water. If you are concerned that radon may be entering your home through the water and your water comes from a public water supply, contact your water supplier.
Please be aware that the EPA has not set a standard or "action level" when mitigation is recommended. The State of Connecticut Department of Public Health has established a recommended action level of 5,000 pCi/L or higher per liter of water.
The good news is if you've tested your private well and have a radon in water problem, it can be fixed.


