How serious a problem is radon in Minnesota?

High radon exist in every state in the U.S. In Minnesota, 2 in 5 homes has radon levels that pose a significant health risk, and nearly 80% of counties are rated high radon zones. Some factors that further contribute to Minnesota's high radon levels include:

  • Minnesota's geology produces an ongoing supply of radon.
  • Minnesota's climate affects how our homes are built and operate.

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1. Where does radon come from?
2. How dangerous is radon?
3. How serious a problem is radon in Minnesota?
4. How does radon enter a home?