What EPA's radon map says about Kane County

EPA's own radon map rates Kane County zone 2 - moderate potential, predicting a county-wide average indoor level between 2 and 4 pCi/L. That puts Kane County in the 39th percentile nationally for radon potential — higher than 39% of the counties EPA has rated.

Where Kane County sits nationally

About 8,525 people live in Kane County, Utah, spread over 3,994.14 square miles. That works out to roughly 2 people per square mile. Among counties sharing Kane County's EPA zone, it outranks 17% of them by population. Geologically, Kane County is grouped into EPA Region 8 alongside 290 other counties that share its rock and soil setting.

Why the zone isn't the answer by itself

EPA's Zone 2 rating for Kane County sits below its own 4 pCi/L action level but above the national indoor average of about 1.3 pCi/L. Nothing about a Zone 2 label lowers the case for testing in Kane County — EPA recommends it in every zone, moderate included.

Testing and mitigation in Kane County

Mitigation cost doesn't depend on Kane 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

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

More on how this number was built

Kane County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.