What EPA's radon map says about Morrill County

EPA places Morrill County in Zone 2 - Moderate Potential — a predicted county-wide average indoor radon level between 2 and 4 pCi/L, based on the geology, soil and aerial radioactivity data behind EPA's national map. Nationally that's the 35th percentile for radon potential — Morrill County outranks 35% of every county EPA has rated.

How Morrill County compares

About 4,485 people live in Morrill County, Nebraska, spread over 1,423.706 square miles. Averaged across its land area, Morrill County runs about 3 people per square mile. Among counties sharing Morrill County's EPA zone, it outranks 8% of them by population. EPA's geology-based Region 7 groups Morrill County with 411 other counties nationally sharing its underlying rock and soil profile.

Zone vs. an actual test

Neither at the 4 pCi/L action level nor down at the roughly 1.3 pCi/L national indoor norm, Morrill County's Zone 2 prediction lands in the gap between the two. Nothing about a Zone 2 label lowers the case for testing in Morrill County — EPA recommends it in every zone, moderate included.

If Morrill County tests above the action level

Mitigation cost doesn't depend on Morrill 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 Nebraska's state radon program

Morrill County's test kit answers today; a Airthings radon monitor keeps answering for Morrill 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

Morrill 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.