My mom is in a contract to buy a house now and the radon test came back as 6.6 level and they said usually it shouldn't be over 4 level. I looked on the internet and it says that the radon levels can be lowered with a system, but my mom is still worried that this is a big problem and is wondering if she should stick with the deal. Does anyone have experience with high radon levels and if so, would you be worried about buying a house with high radon levels?