Post Falls, ID Radon Levels

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

Based on 5 user-submitted tests, the average radon level is 9.00 pCi/L.

Q: What EPA Radon Zone is Post Falls in?

Post Falls is in Kootenai County, EPA Zone 1.

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

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

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

Post Falls, ID Radon Facts

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

County Kootenai County, ID

Zip Code 83854

Avg. User Level 9.00 pCi/L

User Tests 5

Post Falls residents in Kootenai County face significant radon concerns, with local testing showing an average level of 9.0 pCi/L - well above the EPA action threshold. The area's glacial lake sediments over granite bedrock create ideal conditions for radon accumulation in homes throughout zip code 83854. Given that all recent readings have exceeded 4.0 pCi/L, professional radon mitigation should be strongly considered.

9.00

pCi/L average

Above EPA Action Level

Based on 5 user-submitted radon tests for homes in Post Falls, ID. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Post 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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Post Falls, Idaho Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
12 pCi/L	Post Falls, ID	0-20 Years	No Basement/All Slab	May 2024
9 pCi/L	Post Falls, ID	0-20 Years	No Basement/All Slab	Mar 2024
7 pCi/L	Post Falls, ID	21-50 Years	Partial Basement	Jul 2020
8 pCi/L	Post Falls, ID	0-20 Years	No Basement/All Crawl Space	Mar 2018

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

Radon FAQ for Post Falls, ID

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

Based on 5 user-submitted tests, the average radon level in Post Falls is 9.00 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 Post Falls in?

Post Falls and the 83854 zip code are in Kootenai 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 Post Falls?

Radon mitigation in Post 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 Post 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