Sioux City, IA resides in Woodbury 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. Testing is recommended for all homes in the 51101 zip code area.
Sioux City, IA Radon Mitigation
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Sioux City, IA Radon Testing
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Sioux City Radon Facts
Key details about the radon risk profile for Sioux City and the 51101 zip code area.
EPA Radon Zone
Zone 1 — High Risk
County
Woodbury County, IA
Zip Code
51101
Predicted Screening Level
> 4.0 pCi/L (Zone 1)
Sioux City and the 51101 zip code are located in Woodbury 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 Sioux City, IA
What EPA Radon Zone is Sioux City in?
Sioux City and the 51101 zip code are in Woodbury 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 Sioux City?
Radon mitigation in Sioux City 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 Sioux City?
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.
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