What EPA's radon map says about Halifax County

EPA places Halifax County in Zone 2 - Moderate Potential — a predicted county-wide average indoor radon level between 2 and 4 pCi/L, based on the geology, soil and aerial radioactivity data behind EPA's national map. Nationally, Halifax County ranks higher in radon potential than 51% of rated counties (the 51st percentile).

Halifax County by the numbers

About 33,448 people live in Halifax County, Virginia, spread over 817.731 square miles. Averaged across its land area, Halifax County runs about 41 people per square mile. Among counties sharing Halifax County's EPA zone, it outranks 56% of them by population. EPA's geology-based Region 3 groups Halifax County with 244 other counties nationally sharing its underlying rock and soil profile.

Why the zone isn't the answer by itself

Halifax County's predicted average falls between EPA's 4 pCi/L action level and the national indoor average of about 1.3 pCi/L (outdoor air runs roughly 0.4 pCi/L). Nothing about a Zone 2 label lowers the case for testing in Halifax County — EPA recommends it in every zone, moderate included.

Testing and mitigation in Halifax County

Mitigation cost doesn't depend on Halifax 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 Virginia's state radon program

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

Halifax 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.