Lilliwaup, WA Radon Levels
Check local Lilliwaup radon levels and find certified testing and mitigation professionals to keep your home safe
Lilliwaup, WA Radon Facts
EPA Radon Zone
Zone 3 — Low Risk
< 2.0 pCi/L (Zone 3)
County
Mason County, WA
Zip Code
98555
Olympic Peninsula's Mason County includes tiny Lilliwaup, where marine sedimentary deposits and volcanic geology typically produce lower radon levels characteristic of western Washington. Testing data for this remote 98555 area remains unavailable, though the EPA Zone 3 designation suggests minimal radon concern for most residents. The community's coastal location and well-ventilated environment further reduce the likelihood of significant radon accumulation in homes.
Lilliwaup, WA Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
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Radon FAQ for Lilliwaup, WA
What EPA Radon Zone is Lilliwaup in?
Lilliwaup and the 98555 zip code are in Mason 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 Lilliwaup?
Radon mitigation in Lilliwaup 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 Lilliwaup?
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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