Prophetstown, IL Radon Levels

Q: What EPA Radon Zone is Prophetstown in?

Prophetstown is in Whiteside County, EPA Zone 1.

Q: How much does radon mitigation cost in Prophetstown?

Radon mitigation typically costs between $800 and $2,000. Most standard systems fall in the $1,000-$1,500 range.

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

Prophetstown, IL Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)

County Whiteside County, IL

Zip Code 61277

Prophetstown in Whiteside County lies within the Davenport metropolitan area in zip code 61277, positioned where Illinois River valley deposits meet underlying limestone formations. Radon testing data is currently limited for this northwestern Illinois community, though the regional geology supports conditions favorable for radon formation. Homeowners should pursue professional testing to understand their specific indoor air quality conditions.

5.33

pCi/L area average

Above EPA Action Level

Whiteside County average: 5.33 pCi/L, based on 3 user-submitted tests across 2 cities in the county. No homeowner readings have been submitted for Prophetstown itself yet, so this county figure is the closest available benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Prophetstown, IL Radon Mitigation

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

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Radon Readings Near Prophetstown, IL

No homeowner tests have been submitted for Prophetstown yet. The closest cities with user-submitted radon data are shown below — explore them to gauge local conditions. Radon varies by home, so testing is the only way to know your level.

City	Distance	Avg User Level	Readings
Rock Falls	16.1 mi	6.00 pCi/L	2
Geneseo	16.1 mi	6.00 pCi/L	1
Annawan	16.2 mi	10.00 pCi/L	1
Fulton	18.5 mi	4.00 pCi/L	1
Walnut	18.6 mi	5.00 pCi/L	1
Kewanee	27.0 mi	8.00 pCi/L	1
Dixon	27.9 mi	14.00 pCi/L	2
Orion	29.3 mi	4.00 pCi/L	1

Whiteside County Radon Profile

The bedrock and soils beneath Whiteside County are classified by the EPA as Radon Zone 1, the highest-risk tier, with predicted average indoor screening levels above 4 pCi/L. Homeowner-submitted tests from 2 cities in Whiteside County average 5.33 pCi/L across 3 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Radon is the second leading cause of lung cancer in the United States, and a short-term test is the only way to confirm a specific home's level in Whiteside County.

Radon FAQ for Prophetstown, IL

What EPA Radon Zone is Prophetstown in?

Prophetstown and the 61277 zip code are in Whiteside 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.

Why are radon readings shown from areas near Prophetstown?

No homeowner radon tests have been submitted for Prophetstown yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the Whiteside County average—are the best available indicator of local conditions until Prophetstown homeowners submit their own results. The EPA still recommends testing every individual home, since levels can vary significantly from house to house.

How much does radon mitigation cost in Prophetstown?

Radon mitigation in Prophetstown 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 Prophetstown?

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.