What EPA's radon map says about Uintah County

Uintah County is mapped as Zone 1 - Highest Potential by EPA — meaning the county-wide average indoor level is predicted above 4 pCi/L. Rank it against the rest of the country and Uintah County lands in the 88th percentile for radon potential.

Where Uintah County sits nationally

About 38,307 people live in Uintah County, Utah, spread over 4,482.881 square miles. Averaged across its land area, Uintah County runs about 9 people per square mile. Among counties sharing Uintah County's EPA zone, it outranks 63% of them by population. EPA's geology-based Region 8 groups Uintah County with 290 other counties nationally sharing its underlying rock and soil profile.

Zone vs. an actual test

Uintah County's predicted average sits above EPA's own action level of 4 pCi/L — the concentration at which EPA recommends fixing a home — versus a national average around 1.3 pCi/L indoors and 0.4 pCi/L outdoors. A Zone 1 rating means testing is worth doing sooner rather than later, but it is still county-wide average, not a reading for any single house — some homes in Uintah County will test well under the action level, and EPA's guidance is to test regardless of zone.

Testing and mitigation in Uintah County

Mitigation cost doesn't depend on Uintah County's zone — it depends on the house's foundation. A typical system runs $800–$2,500 (about $1,200 typical), and testing first is what tells you whether that's needed at all.

Find Utah's state radon program

Uintah County's test kit answers today; a Airthings radon monitor keeps answering for Uintah County over time. Affiliate link, RadonZoneCheck earns a commission there, at no extra cost to you. Code RADONZONE-10OFF takes 10% off at checkout.

More on how this number was built

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.