Rock Valley, IA resides in Sioux 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 51247 zip code area.
Rock Valley, IA Radon Mitigation
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Rock Valley, IA Radon Testing
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Rock Valley Radon Facts
Key details about the radon risk profile for Rock Valley and the 51247 zip code area.
EPA Radon Zone
Zone 1 — High Risk
County
Sioux County, IA
Zip Code
51247
Predicted Screening Level
> 4.0 pCi/L (Zone 1)
Rock Valley and the 51247 zip code are located in Sioux 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 Rock Valley, IA
What EPA Radon Zone is Rock Valley in?
Rock Valley and the 51247 zip code are in Sioux 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 Rock Valley?
Radon mitigation in Rock Valley 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 Rock Valley?
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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