Tuscarawas County, OH: EPA's radon zone, explained

EPA places Tuscarawas 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 — Tuscarawas County outranks 93% of every county EPA has rated.

Where Tuscarawas County sits nationally

Tuscarawas County, Ohio is home to about 92,048 people across 567.608 square miles. Population density there runs about 162 people per square mile. By population, Tuscarawas County is the 208th largest of every county sharing its EPA zone — the 81st percentile by population within that zone. EPA's geology-based Region 5 groups Tuscarawas County with 523 other counties nationally sharing its underlying rock and soil profile.

Why the zone isn't the answer by itself

Outdoor air nationally averages about 0.4 pCi/L, indoor air about 1.3 pCi/L — Tuscarawas County's Zone 1 prediction clears both of those and EPA's fix-it threshold besides. EPA's guidance doesn't change because of a Zone 1 label: test the house. What changes is the reason to not put it off in Tuscarawas County specifically.

Next steps for a home in Tuscarawas County

For a Tuscarawas County homeowner, the order is simple: test first, since a kit costs a small fraction of what mitigation would. Only if the result clears 4 pCi/L does a system — typically $800–$2,500, about $1,200 for a common install — become worth pricing out.

Find Ohio's state radon program

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

Where Tuscarawas 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 Tuscarawas County carries, the zone explainer covers what it does and doesn't tell you about any one house.