Worcester County, MD radon potential

Worcester 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 23rd percentile for radon potential — Worcester County outranks 23% of every county EPA has rated.

Worcester County by the numbers

Worcester County, Maryland is home to about 54,337 people across 468.299 square miles. Population density there runs about 116 people per square mile. Within its own EPA zone, Worcester County is bigger by population than 69% of the counties that share it. Worcester County falls in EPA Radon Region 3, one of 245 counties nationally EPA assigns to that same geologic province.

Zone vs. an actual test

A Zone 3 county like Worcester County is predicted closer to the 0.4 pCi/L typical outdoors than to EPA's 4 pCi/L action level. A Zone 3 label describes Worcester County's average, not any one basement or slab in it — testing is still the only way an individual homeowner actually finds out.

Testing and mitigation in Worcester County

A short-term test kit is the standard first step and typically costs far less than mitigation itself. If a test comes back at or above 4 pCi/L, a radon mitigation system for a typical home runs roughly $800–$2,500 (around $1,200 for a common single-family install), driven mainly by foundation type, not by county.

Find Maryland's state radon program

For Worcester County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Worcester County's levels over time. RadonZoneCheck earns a commission there, at no extra cost to you. RADONZONE-10OFF at checkout knocks 10% off.

Where Worcester County's figures come from

The methodology guide shows exactly which EPA and Census sources feed Worcester County's numbers. Whatever zone Worcester County carries, the zone explainer covers what it does and doesn't tell you about any one house.