Is Androscoggin County, ME a radon risk area?

EPA places Androscoggin County in Zone 1 - Highest Potential — a predicted county-wide average indoor radon level above 4 pCi/L, based on the geology, soil and aerial radioactivity data behind EPA's national map. That puts Androscoggin County in the 95th percentile nationally for radon potential — higher than 95% of the counties EPA has rated.

Where Androscoggin County sits nationally

About 115,272 people live in Androscoggin County, Maine, spread over 467.956 square miles. Population density there runs about 246 people per square mile. Rank 169 by population within its EPA zone puts Androscoggin County at the 84th percentile among zone peers. EPA's geology-based Region 1 groups Androscoggin County with 58 other counties nationally sharing its underlying rock and soil profile.

What this actually means for a house in Androscoggin County

Fixing a home becomes an EPA recommendation past 4 pCi/L, and that is precisely the side of the line Androscoggin County's Zone 1 prediction lands on, well above the roughly 1.3 pCi/L most US homes average. Some Androscoggin County homes will test comfortably under the action level despite the county's Zone 1 rating — the only way to know which kind of home you have is an actual test.

Next steps for a home in Androscoggin County

Nothing about Androscoggin 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 Maine's state radon program

Androscoggin County's test kit answers today; a Airthings radon monitor keeps answering for Androscoggin 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

Androscoggin County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.