Located in Delaware County in northeastern Iowa, Ryan sits in EPA Zone 1 where glacial deposits over carbonate bedrock create high radon potential. Testing data for this rural community in zip code 52330 remains limited, making individual home testing particularly important for residents. Iowa's uranium-rich glacial soils and the prevalence of full basements in the region's housing stock create ideal conditions for radon gas production and accumulation.
Ryan, IA Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
Ryan, IA Radon Testing
Finding qualified radon testing professionals is the first step toward protecting your home.
Ryan Radon Facts
Key details about the radon risk profile for Ryan and the 52330 zip code area.
EPA Radon Zone
Zone 1 — High Risk
County
Delaware County, IA
Zip Code
52330
Predicted Screening Level
> 4.0 pCi/L (Zone 1)
Ryan and the 52330 zip code are located in Delaware County, which has an EPA assigned Radon Zone of 1. A radon zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L. The EPA recommends testing every home regardless of zone classification.
Radon FAQ for Ryan, IA
What EPA Radon Zone is Ryan in?
Ryan and the 52330 zip code are in Delaware 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 Ryan?
Radon mitigation in Ryan 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 Ryan?
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 with the most user-submitted radon test data in the state.
