State Radon Laws

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Radon is a radioactive, colorless, tasteless, and odorless gas found naturally occurring in the environment. Radon is the second-leading cause of lung cancer in the United States after smoking. Elevated indoor air levels in homes and buildings are the primary source for radon exposure. Radon can easily escape from its origins in the rocks and soil where it can further undergo a process that creates compounds that are hazardous to health.

To protect the public, many states have developed laws and regulations governing radon disclosure, radon certification and mitigation. Some states have also developed mandatory radon testing provisions in schools and homes in certain contexts.