Wabash County, IL radon potential

Wabash 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. Rank it against the rest of the country and Wabash County lands in the 40th percentile for radon potential.

Where Wabash County sits nationally

Wabash County, Illinois is home to about 10,979 people across 223.323 square miles. That works out to roughly 49 people per square mile. Within its own EPA zone, Wabash County is bigger by population than 23% of the counties that share it. Geologically, Wabash County is grouped into EPA Region 5 alongside 523 other counties that share its rock and soil setting.

Why the zone isn't the answer by itself

Neither at the 4 pCi/L action level nor down at the roughly 1.3 pCi/L national indoor norm, Wabash County's Zone 2 prediction lands in the gap between the two. Middle-of-the-pack doesn't mean risk-free for any one Wabash County address — a moderate county average still leaves individual homes to test either side of it.

If Wabash 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 Illinois's state radon program

For Wabash County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Wabash 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 Wabash County's figures come from

Wabash County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. Whatever zone Wabash County carries, the zone explainer covers what it does and doesn't tell you about any one house.