What EPA's radon map says about Luzerne County

Luzerne County is mapped as Zone 1 - Highest Potential by EPA — meaning the county-wide average indoor level is predicted above 4 pCi/L. Nationally, Luzerne County ranks higher in radon potential than 98% of rated counties (the 98th percentile).

Where Luzerne County sits nationally

About 331,379 people live in Luzerne County, Pennsylvania, spread over 889.807 square miles. That works out to roughly 372 people per square mile. Among counties sharing Luzerne County's EPA zone, it outranks 94% of them by population. EPA's geology-based Region 3 groups Luzerne County with 244 other counties nationally sharing its underlying rock and soil profile.

Why the zone isn't the answer by itself

Where the national indoor average runs about 1.3 pCi/L, Luzerne County's Zone 1 rating puts its predicted county average above EPA's 4 pCi/L action level itself. 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 Luzerne County specifically.

Next steps for a home in Luzerne County

Mitigation cost doesn't depend on Luzerne 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 Pennsylvania's state radon program

Luzerne County's test kit answers today; a Airthings radon monitor keeps answering for Luzerne 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. Whatever zone Luzerne County carries, the zone explainer covers what it does and doesn't tell you about any one house.