Adams County, NE radon potential

EPA's own radon map rates Adams County zone 1 - highest potential, predicting a county-wide average indoor level above 4 pCi/L. Nationally that's the 85th percentile for radon potential — Adams County outranks 85% of every county EPA has rated.

How Adams County compares

Adams County, Nebraska is home to about 31,196 people across 563.26 square miles. Population density there runs about 55 people per square mile. Within its own EPA zone, Adams County is bigger by population than 57% of the counties that share it. EPA's geology-based Region 7 groups Adams County with 411 other counties nationally sharing its underlying rock and soil profile.

Zone vs. an actual test

Adams County carries a Zone 1 label because its predicted average clears 4 pCi/L outright — three-plus times the 0.4 pCi/L typical outdoors and above the 1.3 pCi/L most homes see. Some Adams 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.

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

Where Adams County's figures come from

Adams 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.