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Radon levels can vary greatly across a single neighborhood, but there are certain areas of the country that have a higher predicted average indoor radon level, as shown in the EPA map below. However, it's important to test for radon even if you live in a moderate or low-risk area. Research has shown that high radon levels can be found even in states that have lower radon levels on average.
The EPA's radon map is a helpful tool for understanding if your home is likely to have high radon levels, but it is not perfect. The radon map is based on averages, which means a few high or low readings can distort the average radon level. Similarly, radon levels have been shown to fluctuate greatly between neighborhoods and sometimes even from house to house. Just because you are located in an area with a low predicted average indoor radon level doesn't mean that your home isn't at risk.
Whether you are in a county with high or low average radon levels, the safest option is always to simply get a radon test from an experienced radon professional. They can see if your home has a high level of radon and install a radon mitigation system if needed.
As a leading network of radon contractors, National Radon Defense can help. Contact us today to find your local radon experts!