Manitowoc County, WI radon potential

EPA's own radon map rates Manitowoc County zone 2 - moderate potential, predicting a county-wide average indoor level between 2 and 4 pCi/L. That puts Manitowoc County in the 58th percentile nationally for radon potential — higher than 58% of the counties EPA has rated.

Manitowoc County by the numbers

Manitowoc County, Wisconsin is home to about 81,513 people across 589.309 square miles. That works out to roughly 138 people per square mile. Within its own EPA zone, Manitowoc County is bigger by population than 77% of the counties that share it. Manitowoc County falls in EPA Radon Region 5, one of 524 counties nationally EPA assigns to that same geologic province.

Zone vs. an actual test

Call it a middle case: above the 1.3 pCi/L most US homes average, below the 4 pCi/L line EPA uses to recommend mitigation — that's Manitowoc County's Zone 2 prediction. Nothing about a Zone 2 label lowers the case for testing in Manitowoc County — EPA recommends it in every zone, moderate included.

Testing and mitigation in Manitowoc 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 Wisconsin's state radon program

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

Where Manitowoc County's figures come from

Manitowoc County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. Whatever zone Manitowoc County carries, the zone explainer covers what it does and doesn't tell you about any one house.