What EPA's radon map says about Colonial Heights city

Colonial Heights city is mapped as Zone 3 - Low Potential by EPA — meaning the county-wide average indoor level is predicted below 2 pCi/L. Nationally that's the 12th percentile for radon potential — Colonial Heights city outranks 12% of every county EPA has rated.

Colonial Heights city by the numbers

About 18,674 people live in Colonial Heights city, Virginia, spread over 7.519 square miles. Population density there runs about 2,484 people per square mile. Among counties sharing Colonial Heights city's EPA zone, it outranks 37% of them by population.

Zone vs. an actual test

Colonial Heights city's Zone 3 prediction undercuts the roughly 1.3 pCi/L most US homes average, nowhere near EPA's 4 pCi/L threshold for recommending mitigation. Even at Zone 3, Colonial Heights city 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 Colonial Heights city

Mitigation cost doesn't depend on Colonial Heights city'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

Colonial Heights city's test kit answers today; a Airthings radon monitor keeps answering for Colonial Heights city over time. Affiliate link, RadonZoneCheck earns a commission there, at no extra cost to you. RADONZONE-10OFF at checkout knocks 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. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.