Marion, IA Radon Levels

Q: What is the average radon level in Marion, IA?

Based on 1 user-submitted tests, the average radon level is 5.00 pCi/L.

Q: What EPA Radon Zone is Marion in?

Marion is in Linn County, EPA Zone 1.

Q: How much does radon mitigation cost in Marion?

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

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

Marion, IA Radon Facts

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

County Linn County, IA

Zip Code 52302

Avg. User Level 5.00 pCi/L

User Tests 1

This Linn County community in the Cedar Rapids Metro area has recorded an average radon level of 5.0 pCi/L, exceeding the EPA's 4.0 pCi/L action guideline. Marion sits atop glacial till deposits over limestone bedrock, conditions favorable for radon production throughout eastern Iowa. With typical suburban housing featuring basement foundations, homeowners should consider mitigation systems to address these documented elevated radon levels.

5.00

pCi/L average

Above EPA Action Level

Based on 1 user-submitted radon test for homes in Marion, IA. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Marion, IA Radon Mitigation

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Marion, IA Radon Levels

User-submitted radon test readings from homes in the Marion area.

Radon Level	City	Home Age	Foundation
5 pCi/L	Marion, IA	51-99 Years	Full Basement

Have a radon test result for Marion? Submit your reading to help other homeowners.

Radon FAQ for Marion, IA

What is the average radon level in Marion, IA?

Based on 1 user-submitted test, the average radon level in Marion is 5.00 pCi/L. This exceeds the EPA's recommended action level of 4.0 pCi/L, and radon testing is recommended for all homes in the area.

What EPA Radon Zone is Marion in?

Marion and the 52302 zip code are in Linn 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 Marion?

Radon mitigation in Marion 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 Marion?

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 in Iowa with the most user-submitted radon test data, ranked by number of submissions.

City	Avg User Radon Level	Submissions
Waterloo	8.50 pCi/L	4
Ames	9.67 pCi/L	3
Fairfield	14.00 pCi/L	2
Mount Pleasant	12.00 pCi/L	2
Ottumwa	5.50 pCi/L	2
Iowa City	7.00 pCi/L	1
Muscatine	No submissions	0

Marion, IA Radon Levels

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

Marion, IA Radon Facts

Marion, IA Radon Mitigation

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Marion, IA Radon Levels

Radon FAQ for Marion, IA

Most Active Radon Markets in Iowa

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