Radon Levels in Alaska
Alaska is classified as an EPA Zone 2 state with a moderate risk for radon. Average indoor radon levels range from 1 to 4.5 pCi/L, and approximately 18% of Alaska homes test above the EPA action level of 4.0 pCi/L.
Alaska Radon Summary
Key Facts About Radon in Alaska
- Fairbanks area has particularly elevated radon levels
- Tightly sealed homes due to cold climate trap radon more effectively
- Alaska state government actively promotes testing
Alaska Testing Requirements & Recommendations
No mandate, but the Alaska Division of Environmental Health recommends testing all homes.
Sub-slab depressurization (the most common mitigation method) works well in Alaska's soil conditions.
Major Cities in Alaska
Radon levels can vary significantly within Alaska depending on local geology. All residents — regardless of city — should test their specific home, as neighborhood-level radon varies independently of broader state and county averages.
What Should Alaska Residents Do?
Test Your Home
Use a short-term charcoal test kit ($15–$25) for an initial reading, or a continuous radon detector for ongoing monitoring. Test in your basement or lowest livable area.
Understand Your Result
If your result is below 2.0 pCi/L: monitor periodically. Between 2.0–4.0 pCi/L: consider mitigation. Above 4.0 pCi/L: the EPA recommends mitigation. Above 8.0 pCi/L: take action promptly.
Hire a Certified Contractor if Needed
Look for NRPP or NRSB-certified radon mitigation contractors in Alaska. Mitigation systems typically cost $800–$2,500 and can reduce radon levels by 50–99%.
Verify with a Follow-Up Test
After mitigation, test again to confirm the system is working. Retest every 2 years, or after significant home renovations.
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