Watch this video produced by the US Environmental Protection Agency to find out why it recommends that all homes be tested for radon. It also tells you what you can do if your home test results are too high and unhealthy. Just ignoring a radon problem will not make it go away. You’ll rest easier knowing if your radon level is less than the recommended maximum level of 4 picocuries per liter, or pCi/L. If your radon level is elevated above the recommended maximum level, then you can install a system that will mitigate or fix your problem.