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      Denville, NJ Radon Levels

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

      Denville, NJ Radon Facts

      EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)
      County Morris County, NJ
      Zip Code 07834
      Avg. User Level 3.70 pCi/L
      User Tests 3

      Nestled in Morris County within the New York City Metro area, Denville has recorded an average radon level of 2.5 pCi/L based on local testing data. While this falls within the EPA's recommended range, the reading shows the potential for variation, with individual tests ranging from 1.0 to 4.0 pCi/L in zip code 07834. The area's crystalline bedrock and colonial-era to modern housing stock warrant continued testing vigilance.

      3.70
      pCi/L average
      Below EPA Action Level

      Based on 3 user-submitted radon tests for homes in Denville, NJ. The EPA recommends taking action at or above 4.0 pCi/L.

      0
      4.0 EPA
      10+

      Denville, NJ 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 Denville?

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      Denville, NJ Radon Levels

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

      Radon LevelCityHome AgeFoundation
      1 pCi/L Denville, NJ 51-99 Years Full Basement
      4 pCi/L Denville, NJ 0-20 Years Full Basement

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

      Radon FAQ for Denville, NJ

      What is the average radon level in Denville, NJ?
      Based on 3 user-submitted tests, the average radon level in Denville is 3.70 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 Denville in?
      Denville and the 07834 zip code are in Morris 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 Denville?
      Radon mitigation in Denville 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 Denville?
      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 New Jersey

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

      CityAvg User Radon LevelSubmissions
      Cherry Hill 6.44 pCi/L 9
      Hillsborough 6.14 pCi/L 7
      Freehold 10.50 pCi/L 6
      Marlboro 6.17 pCi/L 6
      Bernardsville 7.00 pCi/L 5
      Phillipsburg 7.00 pCi/L 5
      Edison 5.60 pCi/L 5
      Princeton 5.40 pCi/L 5
      Sussex 9.75 pCi/L 4
      Piscataway 6.75 pCi/L 4

      Free Radon Mitigation Quote

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      Free Radon Mitigation Quote

      Or call for a free quote: 1-800-299-3578 Local: 732-979-2523

      A licensed contractor will contact you immediately.

      * Required