Garfield County, NE Radon Zone Data

Garfield County, NE radon potential

EPA places Garfield County in Zone 3 - Low Potential — a predicted county-wide average indoor radon level below 2 pCi/L, based on the geology, soil and aerial radioactivity data behind EPA's national map. Garfield County sits at the 1st percentile nationally for radon potential — above 1 of every 100 rated counties.

Where Garfield County sits nationally

Garfield County, Nebraska is home to about 1,707 people across 569.356 square miles. Population density there runs about 3 people per square mile. Within its own EPA zone, Garfield County is bigger by population than 3% of the counties that share it. Geologically, Garfield County is grouped into EPA Region 7 alongside 411 other counties that share its rock and soil setting.

Zone vs. an actual test

Garfield County's Zone 3 prediction undercuts the roughly 1.3 pCi/L most US homes average, nowhere near EPA's 4 pCi/L threshold for recommending mitigation. Low doesn't mean zero: EPA's own data shows homes in Zone 3 counties like Garfield County testing above the action level often enough that skipping a test isn't the safe assumption.

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 Nebraska'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. RADONZONE-10OFF at checkout knocks 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. Whatever zone Garfield County carries, the zone explainer covers what it does and doesn't tell you about any one house.