“They work good, and the results are valid. And I would recommend for just a homeowner that if they ... Bircher said around 60 percent of the homes he sells do not pass the radon test, meaning they ...

“They work good, and the results are valid ... said around 60 percent of the homes he sells do not pass the radon test, meaning they have a high level of radon. If your home does fail the ...

So, what level is considered a health threat? In the U.S., radon test results are typically reported in two different measures: If your reading is 4 pci/L or higher (picocuries per liter ...

The DHS publishes an interactive map of radon test results to show where radon levels are the highest. You can find that map below. Average indoor levels of radon in U.S. homes is about 1.3 pCi/L ...

Even more, radon levels can vary from home to home, so even if your neighbor has low radon levels, that does not mean you're in ... to know over 40% of radon test results in Utah are at or above ...