LaMoure County, ND radon potential

EPA places LaMoure County in Zone 1 - Highest Potential — a predicted county-wide average indoor radon level above 4 pCi/L, based on the geology, soil and aerial radioactivity data behind EPA's national map. Nationally that's the 70th percentile for radon potential — LaMoure County outranks 70% of every county EPA has rated.

How LaMoure County compares

LaMoure County, North Dakota is home to about 4,051 people across 1,146.005 square miles. That works out to roughly 4 people per square mile. Within its own EPA zone, LaMoure County is bigger by population than 11% of the counties that share it. Geologically, LaMoure County is grouped into EPA Region 8 alongside 290 other counties that share its rock and soil setting.

Zone vs. an actual test

Fixing a home becomes an EPA recommendation past 4 pCi/L, and that is precisely the side of the line LaMoure County's Zone 1 prediction lands on, well above the roughly 1.3 pCi/L most US homes average. A Zone 1 rating means testing is worth doing sooner rather than later, but it is still county-wide average, not a reading for any single house — some homes in LaMoure County will test well under the action level, and EPA's guidance is to test regardless of zone.

If LaMoure 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 North Dakota's state radon program

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

Where LaMoure County's figures come from

LaMoure 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.