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      Tacoma, WA Radon Levels

      Check local Tacoma radon levels and find certified testing and mitigation professionals to keep your home safe

      Tacoma, WA Radon Facts

      EPA Radon Zone Zone 3 — Low Risk < 2.0 pCi/L (Zone 3)
      County Pierce County, WA
      Zip Code 98402
      Avg. User Level 3.00 pCi/L
      User Tests 1

      Washington's third-largest city sits in Pierce County within the Seattle Metro area, where Puget Sound glacial deposits and volcanic ash create generally moderate radon conditions. Current testing data shows an average level of 3.0 pCi/L, which falls within EPA recommended ranges but still warrants monitoring. The diverse housing stock across Tacoma's multiple zip codes includes everything from historic homes with basements to newer construction, making professional radon testing a wise precaution for all homeowners.

      3.00
      pCi/L average
      Below EPA Action Level

      Based on 1 user-submitted radon test for homes in Tacoma, WA. The EPA recommends taking action at or above 4.0 pCi/L.

      0
      4.0 EPA
      10+

      Tacoma, WA Radon Mitigation

      Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

      Need Radon Mitigation or Testing in Tacoma?

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      Tacoma, WA Radon Levels

      User-submitted radon test readings from homes in the Tacoma area.

      Radon LevelCityHome AgeFoundation
      3 pCi/L Tacoma, WA 100+ Years Partial Basement

      Have a radon test result for Tacoma? Submit your reading to help other homeowners.

      Radon FAQ for Tacoma, WA

      What is the average radon level in Tacoma, WA?
      Based on 1 user-submitted test, the average radon level in Tacoma is 3.00 pCi/L. This is below the EPA's recommended action level of 4.0 pCi/L. However, we recommend all homes be tested regardless of your neighbor's results.
      What EPA Radon Zone is Tacoma in?
      Tacoma and the 98402 zip code are in Pierce 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 Tacoma?
      Radon mitigation in Tacoma 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 Tacoma?
      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.

      CityAvg User Radon LevelSubmissions
      Vancouver 6.56 pCi/L 9
      Kent 3.50 pCi/L 6
      Olympia 7.00 pCi/L 5
      Seattle 5.25 pCi/L 4
      Bellevue 3.75 pCi/L 4
      Spokane 11.67 pCi/L 3
      Camas 8.00 pCi/L 3
      Centralia 7.00 pCi/L 3
      Bellingham 4.50 pCi/L 2
      Kirkland 4.50 pCi/L 2

      Free Radon Mitigation Quote

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      Free Radon Mitigation Quote

      Or call for a free quote: 1-800-299-3578 Local: 206-973-0096

      A licensed contractor will contact you immediately.

      * Required