Otsego County, MI radon potential

EPA places Otsego 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 49th percentile for radon potential — Otsego County outranks 49% of every county EPA has rated.

Where Otsego County sits nationally

Otsego County, Michigan is home to about 26,083 people across 515.006 square miles. That works out to roughly 51 people per square mile. Within its own EPA zone, Otsego County is bigger by population than 48% of the counties that share it. EPA's geology-based Region 5 groups Otsego County with 523 other counties nationally sharing its underlying rock and soil profile.

Why the zone isn't the answer by itself

Neither at the 4 pCi/L action level nor down at the roughly 1.3 pCi/L national indoor norm, Otsego County's Zone 2 prediction lands in the gap between the two. A Zone 2 rating is a moderate county-wide average, not a guarantee about any one house in Otsego County — testing is the only way to know an individual home's actual level.

Testing and mitigation in Otsego 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 Michigan's state radon program

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

Where Otsego County's figures come from

The methodology guide shows exactly which EPA and Census sources feed Otsego County's numbers. Whatever zone Otsego County carries, the zone explainer covers what it does and doesn't tell you about any one house.