Muskingum County, OH radon potential

EPA places Muskingum 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 93rd percentile for radon potential — Muskingum County outranks 93% of every county EPA has rated.

Where Muskingum County sits nationally

Muskingum County, Ohio is home to about 86,582 people across 664.546 square miles. Population density there runs about 130 people per square mile. Within its own EPA zone, Muskingum County is bigger by population than 80% of the counties that share it. Geologically, Muskingum County is grouped into EPA Region 5 alongside 523 other counties that share its rock and soil setting.

Why the zone isn't the answer by itself

Muskingum County's predicted average sits above EPA's own action level of 4 pCi/L — the concentration at which EPA recommends fixing a home — versus a national average around 1.3 pCi/L indoors and 0.4 pCi/L outdoors. 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 Muskingum County will test well under the action level, and EPA's guidance is to test regardless of zone.

Testing and mitigation in Muskingum 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 Ohio's state radon program

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

Where Muskingum County's figures come from

Muskingum 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.