Jewell County, KS radon potential

Jewell County is mapped as Zone 1 - Highest Potential by EPA — meaning the county-wide average indoor level is predicted above 4 pCi/L. Nationally, Jewell County ranks higher in radon potential than 69% of rated counties (the 69th percentile).

Where Jewell County sits nationally

Jewell County, Kansas is home to about 2,899 people across 909.971 square miles. Averaged across its land area, Jewell County runs about 3 people per square mile. Within its own EPA zone, Jewell County is bigger by population than 8% of the counties that share it. EPA's geology-based Region 7 groups Jewell County with 411 other counties nationally sharing its underlying rock and soil profile.

What this actually means for a house in Jewell County

Outdoor air nationally averages about 0.4 pCi/L, indoor air about 1.3 pCi/L — Jewell County's Zone 1 prediction clears both of those and EPA's fix-it threshold besides. Some Jewell County homes will test comfortably under the action level despite the county's Zone 1 rating — the only way to know which kind of home you have is an actual test.

If Jewell County tests above the action level

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 Kansas's state radon program

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

Where Jewell County's figures come from

Jewell 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.