What EPA's radon map says about Chenango County

Chenango County is mapped as Zone 1 - Highest Potential by EPA — meaning the county-wide average indoor level is predicted above 4 pCi/L. Nationally that's the 89th percentile for radon potential — Chenango County outranks 89% of every county EPA has rated.

Chenango County by the numbers

About 45,776 people live in Chenango County, New York, spread over 893.443 square miles. Population density there runs about 51 people per square mile. Among counties sharing Chenango County's EPA zone, it outranks 68% of them by population. EPA's geology-based Region 2 groups Chenango County with 82 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 — Chenango County's Zone 1 prediction clears both of those and EPA's fix-it threshold besides. Some Chenango County homes will test comfortably under the action level despite the county's Zone 1 rating — the only way to know which kind of home you have is an actual test.

If Chenango County tests above the action level

Mitigation cost doesn't depend on Chenango County's zone — it depends on the house's foundation. A typical system runs $800–$2,500 (about $1,200 typical), and testing first is what tells you whether that's needed at all.

Find New York's state radon program

Chenango County's test kit answers today; a Airthings radon monitor keeps answering for Chenango County over time. Affiliate link, RadonZoneCheck earns a commission there, at no extra cost to you. Use code RADONZONE-10OFF at checkout for 10% off.

More on how this number was built

Every figure on this page traces to EPA's own Map of Radon Zones and Census data, documented in the methodology guide. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.