Dalzell, IL Radon Levels

Q: What EPA Radon Zone is Dalzell in?

Dalzell is in Bureau County, EPA Zone 1.

Q: How much does radon mitigation cost in Dalzell?

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

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

Dalzell, IL Radon Facts

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

County Bureau County, IL

Zip Code 61320

This Bureau County community in north-central Illinois currently lacks comprehensive radon testing data for the 61320 zip code area. Located in the Illinois River valley region, the area's alluvial soils over limestone bedrock create geological conditions that can produce variable radon levels from property to property. Given Illinois's statewide radon concerns, homeowners should prioritize professional testing regardless of limited local data availability.

7.50

pCi/L area average

Above EPA Action Level

Bureau County average: 7.50 pCi/L, based on 4 user-submitted tests across 3 cities in the county. No homeowner readings have been submitted for Dalzell 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+

Dalzell, 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 Dalzell, IL

No homeowner tests have been submitted for Dalzell 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
Spring Valley	2.5 mi	2.00 pCi/L	1
Peru	2.7 mi	6.50 pCi/L	2
Princeton	13.3 mi	11.50 pCi/L	2
Earlville	20.9 mi	11.00 pCi/L	1
Varna	22.6 mi	20.00 pCi/L	1
Streator	23.9 mi	7.00 pCi/L	1
Marseilles	24.7 mi	9.00 pCi/L	1
Amboy	25.8 mi	5.00 pCi/L	1

Bureau County Radon Profile

Because of its underlying geology, Bureau County is mapped as EPA Radon Zone 1 — the most elevated classification — where predicted indoor screening averages exceed 4 pCi/L. Homeowner-submitted tests from 3 cities in Bureau County average 7.50 pCi/L across 4 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. As the second leading cause of lung cancer in the U.S., radon warrants testing in every Bureau County home regardless of zone or a neighbor's results.

Radon FAQ for Dalzell, IL

What EPA Radon Zone is Dalzell in?

Dalzell and the 61320 zip code are in Bureau 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 Dalzell?

No homeowner radon tests have been submitted for Dalzell yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the Bureau County average—are the best available indicator of local conditions until Dalzell 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 Dalzell?

Radon mitigation in Dalzell 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 Dalzell?

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.