Idaho Falls, ID Radon Levels

Q: What is the average radon level in Idaho Falls, ID?

Based on 7 user-submitted tests, the average radon level is 7.30 pCi/L.

Q: What EPA Radon Zone is Idaho Falls in?

Idaho Falls is in Bonneville County, EPA Zone 2.

Q: How much does radon mitigation cost in Idaho Falls?

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

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

Idaho Falls, ID Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)

County Bonneville County, ID

Zip Code 83401

Avg. User Level 7.30 pCi/L

User Tests 7

Eastern Idaho's largest city, Idaho Falls in Bonneville County shows concerning radon levels with an average of 7.29 pCi/L from local testing, significantly exceeding the EPA's 4.0 pCi/L action threshold. Located within the Idaho Falls Metro area, the community sits on Snake River Plain basalts that contribute to elevated radon potential across multiple zip codes including 83401, 83402, 83404, and 83406. The area's predominantly single-family homes, many built between the 1950s and 1990s with full basements, create ideal conditions for radon accumulation requiring prompt mitigation consideration.

7.30

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

Idaho Falls, ID Radon Mitigation

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

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Idaho Falls, Idaho Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
3 pCi/L	Idaho Falls, ID	0-20 Years	Full Basement	Aug 2025
6 pCi/L	Idaho Falls, ID	0-20 Years	Full Basement	Nov 2023
5 pCi/L	Idaho Falls, ID	21-50 Years	Full Basement	Nov 2023
11 pCi/L	Idaho Falls, ID	0-20 Years	Partial Basement	Nov 2023
4 pCi/L	Idaho Falls, ID	0-20 Years	Full Basement	Dec 2018

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

Radon FAQ for Idaho Falls, ID

What is the average radon level in Idaho Falls, ID?

Based on 7 user-submitted tests, the average radon level in Idaho Falls is 7.30 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 Idaho Falls in?

Idaho Falls and the 83401 zip code are in Bonneville County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.

How much does radon mitigation cost in Idaho Falls?

Radon mitigation in Idaho Falls 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 Idaho Falls?

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 Idaho

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

City	Avg User Radon Level	Submissions
Idaho Falls	7.29 pCi/L	7
Hailey	7.83 pCi/L	6
Post Falls	9.00 pCi/L	5
Coeur D Alene	9.00 pCi/L	4
Moscow	7.75 pCi/L	4
Victor	6.67 pCi/L	3
Driggs	16.00 pCi/L	2
Hayden	8.50 pCi/L	2
Pocatello	8.50 pCi/L	2
Eagle	6.00 pCi/L	1