Is Juneau City and Borough, AK a radon risk area?

EPA's own radon map rates Juneau City and Borough zone 3 - low potential, predicting a county-wide average indoor level below 2 pCi/L. Juneau City and Borough sits at the 18th percentile nationally for radon potential — above 18 of every 100 rated counties.

Juneau City and Borough by the numbers

About 31,572 people live in Juneau City and Borough, Alaska, spread over 2,702.924 square miles. Population density there runs about 12 people per square mile. Rank 467 by population within its EPA zone puts Juneau City and Borough at the 55th percentile among zone peers. Geologically, Juneau City and Borough is grouped into EPA Region 10 alongside 141 other counties that share its rock and soil setting.

Why the zone isn't the answer by itself

A Zone 3 county like Juneau City and Borough 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 Juneau City and Borough'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 Juneau City and Borough

Nothing about Juneau City and Borough'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 Alaska's state radon program

Juneau City and Borough's test kit answers today; a Airthings radon monitor keeps answering for Juneau City and Borough 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 Juneau City and Borough's numbers. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.