Garfield County, UT radon potential

Garfield 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 36th percentile for radon potential — Garfield County outranks 36% of every county EPA has rated.

Where Garfield County sits nationally

Garfield County, Utah is home to about 5,290 people across 5,179.556 square miles. Population density there runs about 1 people per square mile. Within its own EPA zone, Garfield County is bigger by population than 9% of the counties that share it. Garfield County falls in EPA Radon Region 8, one of 291 counties nationally EPA assigns to that same geologic province.

What this actually means for a house in Garfield County

Garfield County's Zone 2 prediction clears the 1.3 pCi/L national indoor average without reaching EPA's own 4 pCi/L point for recommending a fix. Middle-of-the-pack doesn't mean risk-free for any one Garfield County address — a moderate county average still leaves individual homes to test either side of it.

Testing and mitigation in Garfield 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 Garfield County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Garfield 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 Garfield County's figures come from

Garfield County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.