Bloomington, IN Radon Levels

Q: What is the average radon level in Bloomington, IN?

Based on 7 user-submitted tests, the average radon level is 8.10 pCi/L.

Q: What EPA Radon Zone is Bloomington in?

Bloomington is in Monroe County, EPA Zone 1.

Q: How much does radon mitigation cost in Bloomington?

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

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

Bloomington, IN Radon Facts

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

County Monroe County, IN

Zip Code 47401

Avg. User Level 8.10 pCi/L

User Tests 7

Home to Indiana University in Monroe County, Bloomington registers radon levels averaging 8.14 pCi/L, substantially exceeding the EPA's 4.0 pCi/L threshold. The community's limestone bedrock foundation and mix of historic and modern housing with basement construction contribute to elevated readings that require homeowner attention and potential mitigation measures.

8.10

pCi/L average

Above EPA Action Level

Based on 7 user-submitted radon tests for homes in Bloomington, IN. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Bloomington, IN Radon Mitigation

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

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Bloomington, Indiana Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
5 pCi/L	Bloomington, IN	21-50 Years	No Basement/All Crawl Space	Jan 2025
4 pCi/L	Bloomington, IN	0-20 Years	Full Basement	Dec 2021
4 pCi/L	Bloomington, IN	51-99 Years	Full Basement	Sep 2020
20 pCi/L	Bloomington, IN	0-20 Years	Full Basement	Feb 2020
11 pCi/L	Bloomington, IN	51-99 Years	Partial Basement	Sep 2019

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

Radon FAQ for Bloomington, IN

What is the average radon level in Bloomington, IN?

Based on 7 user-submitted tests, the average radon level in Bloomington is 8.10 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 Bloomington in?

Bloomington and the 47401 zip code are in Monroe 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 Bloomington?

Radon mitigation in Bloomington 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 Bloomington?

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 Indiana

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

City	Avg User Radon Level	Submissions
Bloomington	8.14 pCi/L	7
Kokomo	7.40 pCi/L	5
Lafayette	15.00 pCi/L	3
Valparaiso	10.00 pCi/L	3
Westfield	6.33 pCi/L	3
Avon	6.00 pCi/L	3
West Lafayette	10.50 pCi/L	2
Dyer	9.50 pCi/L	2
Columbus	7.50 pCi/L	2
Noblesville	7.00 pCi/L	2