Menominee County, WI radon potential

EPA places Menominee 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. That puts Menominee County in the 70th percentile nationally for radon potential — higher than 70% of the counties EPA has rated.

Menominee County by the numbers

Menominee County, Wisconsin is home to about 4,286 people across 357.615 square miles. Averaged across its land area, Menominee County runs about 12 people per square mile. Within its own EPA zone, Menominee County is bigger by population than 11% of the counties that share it. Geologically, Menominee County is grouped into EPA Region 5 alongside 523 other counties that share its rock and soil setting.

Zone vs. an actual test

Outdoor air nationally averages about 0.4 pCi/L, indoor air about 1.3 pCi/L — Menominee County's Zone 1 prediction clears both of those and EPA's fix-it threshold besides. Some Menominee 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.

If Menominee 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 Wisconsin's state radon program

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

Where Menominee County's figures come from

Every figure on this page traces to EPA's own Map of Radon Zones and Census data, documented in the methodology guide. Whatever zone Menominee County carries, the zone explainer covers what it does and doesn't tell you about any one house.