Edmonds, WA Radon Levels
Check local Edmonds radon levels and find certified testing and mitigation professionals to keep your home safe
Edmonds, WA Radon Facts
EPA Radon Zone
Zone 3 — Low Risk
< 2.0 pCi/L (Zone 3)
County
Snohomish County, WA
Zip Code
98020
Coastal Edmonds in Snohomish County within the Seattle Metro area sits in EPA Zone 3, where Puget Sound region geology typically produces lower radon levels. Testing data for this 98020 zip code community remains sparse, though western Washington's marine climate and geological conditions generally reduce radon accumulation potential. Residents should still conduct periodic testing, especially in properties with below-grade spaces or older foundation systems.
Edmonds, WA Radon Mitigation
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Radon FAQ for Edmonds, WA
What EPA Radon Zone is Edmonds in?
Edmonds and the 98020 zip code are in Snohomish County, which has an EPA assigned Radon Zone of 3. A zone of 3 predicts an average indoor radon screening level less than 2 pCi/L.
How much does radon mitigation cost in Edmonds?
Radon mitigation in Edmonds typically costs between $800 and $2,000. Most homes with standard basements can be mitigated with a sub-slab depressurization system in the $1,000–$1,500 range. Factors that can increase cost include complex foundations, crawl spaces, or very high radon levels.
Should I test for radon if I'm buying a home in Edmonds?
Yes. Radon testing should be part of every home purchase. A short-term radon test is typically included as part of the home inspection process and costs $150–$250. If elevated levels are found, you can negotiate mitigation as part of the sale.
Most Active Radon Markets in Washington
Cities in Washington with the most user-submitted radon test data, ranked by number of submissions.