Lopez Island, WA Radon Levels
Check local Lopez Island radon levels and find certified testing and mitigation professionals to keep your home safe
Lopez Island, WA Radon Facts
EPA Radon Zone
Zone 3 — Low Risk
< 2.0 pCi/L (Zone 3)
County
San Juan County, WA
Zip Code
98261
Positioned in the scenic San Juan County archipelago, Lopez Island in zip code 98261 sits on glacial marine deposits and sedimentary bedrock typical of the Pacific Northwest islands. With radon testing data limited for this island community, residents should consider individual home testing to establish reliable indoor air quality baselines. The island's unique geological setting and mix of seasonal and year-round housing can create varied conditions for radon accumulation.
Lopez Island, WA Radon Mitigation
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Radon FAQ for Lopez Island, WA
What EPA Radon Zone is Lopez Island in?
Lopez Island and the 98261 zip code are in San Juan 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 Lopez Island?
Radon mitigation in Lopez Island 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 Lopez Island?
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.
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