Cattaraugus County, NY: EPA's radon zone, explained

EPA's own radon map rates Cattaraugus County zone 1 - highest potential, predicting a county-wide average indoor level above 4 pCi/L. Nationally, Cattaraugus County ranks higher in radon potential than 93% of rated counties (the 93rd percentile).

How Cattaraugus County compares

Cattaraugus County, New York is home to about 75,475 people across 1,308.183 square miles. Population density there runs about 58 people per square mile. By population, Cattaraugus County is the 234th largest of every county sharing its EPA zone — the 78th percentile by population within that zone. EPA's geology-based Region 2 groups Cattaraugus County with 82 other counties nationally sharing its underlying rock and soil profile.

What this actually means for a house in Cattaraugus County

Fixing a home becomes an EPA recommendation past 4 pCi/L, and that is precisely the side of the line Cattaraugus County's Zone 1 prediction lands on, well above the roughly 1.3 pCi/L most US homes average. 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 Cattaraugus County will test well under the action level, and EPA's guidance is to test regardless of zone.

Testing and mitigation in Cattaraugus County

For a Cattaraugus 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 New York's state radon program

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

Where Cattaraugus County's figures come from

Cattaraugus County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.