Is Nottoway County, VA a radon risk area?

EPA's own radon map rates Nottoway County zone 1 - highest potential, predicting a county-wide average indoor level above 4 pCi/L. Nationally that's the 79th percentile for radon potential — Nottoway County outranks 79% of every county EPA has rated.

Where Nottoway County sits nationally

About 15,632 people live in Nottoway County, Virginia, spread over 314.39 square miles. Population density there runs about 50 people per square mile. Rank 647 by population within its EPA zone puts Nottoway County at the 39th percentile among zone peers. Nottoway County falls in EPA Radon Region 3, one of 245 counties nationally EPA assigns to that same geologic province.

What this actually means for a house in Nottoway County

Nottoway County's predicted average sits above EPA's own action level of 4 pCi/L — the concentration at which EPA recommends fixing a home — versus a national average around 1.3 pCi/L indoors and 0.4 pCi/L outdoors. Being in Zone 1 raises the odds Nottoway 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 Nottoway County

Nothing about Nottoway 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 Virginia's state radon program

Nottoway County's test kit answers today; a Airthings radon monitor keeps answering for Nottoway 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 Nottoway County's numbers. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.