What EPA's radon map says about Northeastern Connecticut Planning Region

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

How Northeastern Connecticut Planning Region compares

About 97,701 people live in Northeastern Connecticut Planning Region, Connecticut, spread over 553.9 square miles. That works out to roughly 176 people per square mile.

Why the zone isn't the answer by itself

EPA's 4 pCi/L action level and the roughly 1.3 pCi/L national indoor average apply to Northeastern Connecticut Planning Region the same as anywhere, even without a zone rating to place it against. 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 Northeastern Connecticut Planning Region

Mitigation cost doesn't depend on Northeastern Connecticut 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

Northeastern Connecticut Planning Region's test kit answers today; a Airthings radon monitor keeps answering for Northeastern Connecticut 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 Northeastern Connecticut Planning Region's numbers. See the coverage gaps guide for the full list of boundary changes EPA's map predates.