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      Santa Ana, CA Radon Levels

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

      Santa Ana, CA Radon Facts

      EPA Radon Zone Zone 3 — Low Risk < 2.0 pCi/L (Zone 3)
      County Orange County, CA
      Zip Code 92701
      Avg. User Level 15.00 pCi/L
      User Tests 1

      Located in Orange County within the Los Angeles Metro area, Santa Ana sits on alluvial fan deposits from the Santa Ana Mountains, creating varied geological conditions throughout the city. The community features dense urban housing from multiple eras, ranging from 1920s bungalows to modern condominiums, most built with concrete slab foundations. Recent testing data shows an average radon level of 15.0 pCi/L, which significantly exceeds the EPA action level of 4.0 pCi/L and indicates that mitigation systems should be strongly considered for affected properties.

      15.00
      pCi/L average
      Above EPA Action Level

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

      0
      4.0 EPA
      10+

      Santa Ana, CA Radon Mitigation

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

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      Santa Ana, CA Radon Levels

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

      Radon LevelCityHome AgeFoundation
      15 pCi/L Santa Ana, CA 51-99 Years No Basement/All Slab

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

      Radon FAQ for Santa Ana, CA

      What is the average radon level in Santa Ana, CA?
      Based on 1 user-submitted test, the average radon level in Santa Ana is 15.00 pCi/L. This exceeds the EPA's recommended action level of 4.0 pCi/L, and radon testing is recommended for all homes in the area.
      What EPA Radon Zone is Santa Ana in?
      Santa Ana and the 92701 zip code are in Orange 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 Santa Ana?
      Radon mitigation in Santa Ana 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 Santa Ana?
      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 California

      Cities in California with the most user-submitted radon test data, ranked by number of submissions.

      CityAvg User Radon LevelSubmissions
      Los Angeles 7.83 pCi/L 6
      Mammoth Lakes 10.80 pCi/L 5
      San Jose 4.20 pCi/L 5
      Rancho Palos Verdes 8.00 pCi/L 4
      Bishop 6.25 pCi/L 4
      Oakland 5.00 pCi/L 4
      Woodland Hills 7.67 pCi/L 3
      South Lake Tahoe 6.33 pCi/L 3
      Palos Verdes Peninsula 6.00 pCi/L 3
      Sacramento 4.33 pCi/L 3

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      Free Radon Mitigation Quote

      Or call for a free quote: 1-800-299-3578

      A licensed contractor will contact you immediately.

      * Required