What EPA's radon map says about Greater Bridgeport Planning Region

EPA's Map of Radon Zones does not carry a rating for Greater Bridgeport Planning Region under its current boundaries — the map dates to 1993 and this county's borders have changed since (see the coverage gaps guide).

Where Greater Bridgeport Planning Region sits nationally

About 335,666 people live in Greater Bridgeport Planning Region, Connecticut, spread over 140.192 square miles. Population density there runs about 2,394 people per square mile.

Zone vs. an actual test

Greater Bridgeport Planning Region has no EPA zone to compare against, but the national numbers don't move: 4 pCi/L is still the action level, 1.3 pCi/L the typical indoor reading. EPA's guidance is unchanged by the absence of a zone rating here: test every home, since a zone (where one exists) only describes a county-wide average, never an individual house.

Next steps for a home in Greater Bridgeport Planning Region

Mitigation cost doesn't depend on Greater Bridgeport Planning Region'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 Connecticut's state radon program

Greater Bridgeport Planning Region's test kit answers today; a Airthings radon monitor keeps answering for Greater Bridgeport Planning Region 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

The methodology guide shows exactly which EPA and Census sources feed Greater Bridgeport Planning Region's numbers. See the coverage gaps guide for the full list of boundary changes EPA's map predates.