Rich County, UT radon potential

Rich County is mapped as Zone 2 - Moderate Potential by EPA — meaning the county-wide average indoor level is predicted between 2 and 4 pCi/L. Nationally that's the 34th percentile for radon potential — Rich County outranks 34% of every county EPA has rated.

How Rich County compares

Rich County, Utah is home to about 2,752 people across 1,028.758 square miles. Population density there runs about 3 people per square mile. Within its own EPA zone, Rich County is bigger by population than 4% of the counties that share it. EPA's geology-based Region 8 groups Rich County with 290 other counties nationally sharing its underlying rock and soil profile.

Zone vs. an actual test

Call it a middle case: above the 1.3 pCi/L most US homes average, below the 4 pCi/L line EPA uses to recommend mitigation — that's Rich County's Zone 2 prediction. Nothing about a Zone 2 label lowers the case for testing in Rich County — EPA recommends it in every zone, moderate included.

Testing and mitigation in Rich County

A short-term test kit is the standard first step and typically costs far less than mitigation itself. If a test comes back at or above 4 pCi/L, a radon mitigation system for a typical home runs roughly $800–$2,500 (around $1,200 for a common single-family install), driven mainly by foundation type, not by county.

Find Utah's state radon program

For Rich County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Rich County's levels over time. RadonZoneCheck earns a commission there, at no extra cost to you. Use code RADONZONE-10OFF at checkout for 10% off.

Where Rich County's figures come from

Every figure on this page traces to EPA's own Map of Radon Zones and Census data, documented in the methodology guide. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.