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What is radon, and why is it dangerous?

The action level for radon, the level where the health risk warrants fixing, is 4 picocuries per liter of air (pCi/l). The U.S. Environmental Protection Agency estimates that one in 15 homes nationwide has an elevated level of radon (a level at or above the action level), while one in four homes tested in Nevada has an elevated radon level.

Because Nevada lacks any regulations that protect citizens from radon, the first step toward risk-reduction occurs through education. The second step is to test, as testing is the only way to determine a home or building's radon level.

Additionally, a home should be tested every two years, before or after remodeling and after significant seismic activity.

Read more here.