Navigator Dose Tool

Home radon level (pCi/L)

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Estimated annual dose contribution at 4.0 pCi/L

Name	Role	Time at home	Lowest level (awake)	Sleeping location	WFH	Estimated dose	Category

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Interpretation & Context

This estimate reflects how much radiation each person in your home receives from the radon level in your house based on time spent in different parts of the house.

How to read the dose number

• The average American receives about 6.2 mSv/year from all natural and man‑made sources combined.
• Your radon dose estimate shows how much of that total comes specifically from radon in your home.
• The percentage helps you understand the magnitude of the contribution.

Understanding the dose category

• Low dose contribution — radon adds only a small share to your total annual exposure.
• Elevated dose contribution — radon is a meaningful part of your annual exposure.
• Significant dose contribution — radon is one of the larger contributors to your yearly radiation dose.

What families typically consider next

• If your radon level is 4.0 pCi/L or higher, EPA recommends mitigation.
• If your dose contribution is elevated or significant, families often explore mitigation even below 4.0 pCi/L.
• If your dose contribution is low, families often continue monitoring and retesting.