What EPA's radon map says about Pulaski County

Pulaski County 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 31st percentile for radon potential — Pulaski County outranks 31% of every county EPA has rated.

Pulaski County by the numbers

About 401,209 people live in Pulaski County, Arkansas, spread over 758.37 square miles. Population density there runs about 529 people per square mile. Among counties sharing Pulaski County's EPA zone, it outranks 93% of them by population. Pulaski County falls in EPA Radon Region 6, one of 503 counties nationally EPA assigns to that same geologic province.

Why the zone isn't the answer by itself

Well clear of both the 1.3 pCi/L national indoor average and EPA's 4 pCi/L action level, Pulaski County's Zone 3 prediction is the low end of the scale. Don't read Zone 3 as a pass for Pulaski County — EPA's guidance to test every home makes no exception for counties predicted low.

If Pulaski County tests above the action level

Mitigation cost doesn't depend on Pulaski 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 Arkansas's state radon program

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

More on how this number was built

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