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      Marshalltown, IA Radon Levels

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

      Marshalltown, IA Radon Facts

      EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)
      County Marshall County, IA
      Zip Code 50158
      Avg. User Level 9.00 pCi/L
      User Tests 1

      Central Iowa's Marshall County seat shows concerning radon levels, with an average reading of 9.0 pCi/L significantly exceeding the EPA's 4.0 pCi/L action threshold. The 50158 area sits over deep glacial deposits and underlying Paleozoic bedrock that contribute to Iowa's notably high radon potential. Given these elevated readings and the prevalence of full basements in the region's housing stock, residents should prioritize professional radon testing and mitigation systems.

      9.00
      pCi/L average
      Above EPA Action Level

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

      0
      4.0 EPA
      10+

      Marshalltown, IA Radon Mitigation

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

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      Marshalltown, IA Radon Levels

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

      Radon LevelCityHome AgeFoundation
      9 pCi/L Marshalltown, IA 51-99 Years Full Basement

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

      Radon FAQ for Marshalltown, IA

      What is the average radon level in Marshalltown, IA?
      Based on 1 user-submitted test, the average radon level in Marshalltown is 9.00 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 Marshalltown in?
      Marshalltown and the 50158 zip code are in Marshall County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.
      How much does radon mitigation cost in Marshalltown?
      Radon mitigation in Marshalltown 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 Marshalltown?
      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 Iowa

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

      CityAvg User Radon LevelSubmissions
      Waterloo 8.50 pCi/L 4
      Ames 9.67 pCi/L 3
      Fairfield 14.00 pCi/L 2
      Mount Pleasant 12.00 pCi/L 2
      Ottumwa 5.50 pCi/L 2
      Iowa City 7.00 pCi/L 1
      Muscatine No submissions 0

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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