If the radon levels in your home are only slightly elevated, try sealing holes and cracks in concrete walls and floors and test again. In most cases, sealing doesn’t solve the problem. But you’ll have ...

Poolesville’s 2010-2011 water report found the level for well 7 to be 33.5 micrograms per liter. The level at wells 9 and 10 is 12.05 micrograms per liter, but the radon and uranium removal system is ...