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While Radon exists at some level in all areas around the world, whether in the air outside or in your home, the average acceptable level for indoors is 1.3 pCi/L and a test result reading of 4.0pCi/L or more is considered a risk level.
What to do if you find high levels of Radon in your home.
Can Radon levels be reduced?
Yes! It is recommended by the EPA that you take action to reduce your home's radon levels if your radon test result is 4.0 pCi/L or higher. Most homes can be fixed for about the same cost as other common home repairs, like 
painting or having a new water heater installed.The average cost for a contractor to lower radon levels in a home is about $1200, but this
How to reduce the Radon levels in your home.
Radon reduction contractors can install systems called "sub-slab depressurization". These systems, which do not require major changes to your home, can effectively reduce Radon levels in your home. "Sub-slab depressurization" prevents radon gas from entering the living space, keeping it below the concrete floor and foundation. There are other methods that may also work in your home. The right system depends on the design of your home and several other factors.
Test your home again after it is fixed to be sure that radon levels have been reduced. If your living patterns change and you begin occupying a lower level of your home (such as a basement) you should re-test your home on that level. In addition, it is a good idea to re-test your home in the future to be sure radon levels remain low.
Call your state's Radon Contact for an approved Radon Reduction Contractor in your area.
