Van Wert County, OH: EPA's radon zone, explained

EPA's own radon map rates Van Wert County zone 1 - highest potential, predicting a county-wide average indoor level above 4 pCi/L. That puts Van Wert County in the 85th percentile nationally for radon potential — higher than 85% of the counties EPA has rated.

How Van Wert County compares

Van Wert County, Ohio is home to about 28,887 people across 409.15 square miles. Population density there runs about 71 people per square mile. By population, Van Wert County is the 477th largest of every county sharing its EPA zone — the 55th percentile by population within that zone. EPA's geology-based Region 5 groups Van Wert County with 523 other counties nationally sharing its underlying rock and soil profile.

Why the zone isn't the answer by itself

Fixing a home becomes an EPA recommendation past 4 pCi/L, and that is precisely the side of the line Van Wert County's Zone 1 prediction lands on, well above the roughly 1.3 pCi/L most US homes average. That doesn't mean every Van Wert County house tests high — a zone is a county-wide prediction, never a single-home reading — but it's a reason to test sooner rather than let it wait.

Testing and mitigation in Van Wert County

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

Where Van Wert County's figures come from

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