Union, WA Radon Levels
Check local Union radon levels and find certified testing and mitigation professionals to keep your home safe
Union, WA Radon Facts
EPA Radon Zone
Zone 3 — Low Risk
< 2.0 pCi/L (Zone 3)
County
Mason County, WA
Zip Code
98592
Union in Mason County sits along Washington's Puget Sound region, where marine sediments and volcanic soils generally create lower radon potential. While testing data for zip code 98592 remains limited, the area's EPA Zone 3 classification indicates relatively low radon risk. Nevertheless, homeowners should consider professional radon testing to ensure their indoor air quality meets safety standards.
Union, 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 Union, WA
What EPA Radon Zone is Union in?
Union and the 98592 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 Union?
Radon mitigation in Union 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 Union?
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.