Is Beaver County, PA a radon risk area?

Beaver County is mapped as Zone 1 - Highest Potential by EPA — meaning the county-wide average indoor level is predicted above 4 pCi/L. Beaver County sits at the 96th percentile nationally for radon potential — above 96 of every 100 rated counties.

Beaver County by the numbers

About 165,540 people live in Beaver County, Pennsylvania, spread over 434.695 square miles. Averaged across its land area, Beaver County runs about 381 people per square mile. Rank 120 by population within its EPA zone puts Beaver County at the 89th percentile among zone peers. Geologically, Beaver County is grouped into EPA Region 3 alongside 244 other counties that share its rock and soil setting.

Zone vs. an actual test

Outdoor air nationally averages about 0.4 pCi/L, indoor air about 1.3 pCi/L — Beaver County's Zone 1 prediction clears both of those and EPA's fix-it threshold besides. Being in Zone 1 raises the odds Beaver County homes test above the action level, but it does not mean any specific house does — EPA recommends every home be tested, in every zone, because the only way to know is to test.

Testing and mitigation in Beaver County

Nothing about Beaver County's EPA zone changes the mitigation number: $800–$2,500 nationally (around $1,200 typical), set by the house's foundation rather than the county it sits in — and only relevant once a test actually clears 4 pCi/L.

Find Pennsylvania's state radon program

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

More on how this number was built

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