What EPA's radon map says about Burnet County

EPA places Burnet County in Zone 3 - Low Potential — a predicted county-wide average indoor radon level below 2 pCi/L, based on the geology, soil and aerial radioactivity data behind EPA's national map. Burnet County sits at the 23rd percentile nationally for radon potential — above 23 of every 100 rated counties.

How Burnet County compares

About 55,722 people live in Burnet County, Texas, spread over 994.845 square miles. Averaged across its land area, Burnet County runs about 56 people per square mile. Among counties sharing Burnet County's EPA zone, it outranks 70% of them by population. EPA's geology-based Region 6 groups Burnet County with 502 other counties nationally sharing its underlying rock and soil profile.

Zone vs. an actual test

Burnet County's predicted average sits below the national indoor average of about 1.3 pCi/L, well under EPA's 4 pCi/L action level. Even at Zone 3, Burnet County homes are not guaranteed a low reading — zone is a county-wide average, and EPA recommends testing every home regardless of zone.

Next steps for a home in Burnet County

Mitigation cost doesn't depend on Burnet 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 Texas's state radon program

Burnet County's test kit answers today; a Airthings radon monitor keeps answering for Burnet 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

Burnet County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. Whatever zone Burnet County carries, the zone explainer covers what it does and doesn't tell you about any one house.