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EPA Acceptable Radon Levels

Radon occurs naturally in the environment and may cause respiratory problems and cancer. Indoor concentrations of radon are usually higher that of outside air because radon seeps into the home and stagnates. Eventually, the U.S. Environmental Protection Agency hopes to get indoor and outdoor radon levels to parity, but this is not very feasible with current technology.

  1. The Facts

    • According to the EPA, people should perform radon remediation actions when concentrations rise above 4.0 picocuries per liter of air.

    Considerations

    • Ideally, air should not contain any measurable amount of radon. However, the U.S. EPA and Congress hope to get the average indoor air radon concentration levels to the natural limit of 0.4 picocuries per liter of air.

    Warning

    • A radon level of 4.0 picocuries per liter of air is acceptable, but still carries a health risk. Homeowners should consider taking action to reduce radon when concentrations rise to 2.0 to 4.0 picocuries per liter of air.

    Testing

    • All homeowners should monitor radon levels in their home using a testing kit. These are available at just about any hardware store, or you can order one online from the National Radon Program Services.

    Solution

    • Home repair professionals usually reduce radon levels by sealing up any air leaks and using a combination of ventilation and fans to induce air flow through the house.

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