Florence, MT Radon Levels

Q: What is the average radon level in Florence, MT?

Based on 4 user-submitted tests, the average radon level is 9.50 pCi/L.

Q: What EPA Radon Zone is Florence in?

Florence is in Ravalli County, EPA Zone 1.

Q: How much does radon mitigation cost in Florence?

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

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

Florence, MT Radon Facts

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

County Ravalli County, MT

Zip Code 59833

Avg. User Level 9.50 pCi/L

User Tests 4

Nestled in Ravalli County in the Bitterroot Valley, Florence has recorded a concerning average radon level of 11.67 pCi/L from three tests, nearly triple the EPA action threshold. The valley's glacial deposits and mountain drainage patterns create significant radon accumulation potential for homes in the 59833 zip code area.

9.50

pCi/L average

Above EPA Action Level

Based on 4 user-submitted radon tests for homes in Florence, MT. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Florence, MT Radon Mitigation

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

Need Radon Mitigation or Testing in Florence?

100% Free, No-Obligation Quotes
Matches You with State-Licensed Ravalli County Pros

1-800-299-3578 Toll-free · Mon–Fri 8am–6pm ET

Florence, Montana Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
20 pCi/L	Florence, MT	21-50 Years	Full Basement	Nov 2025
12 pCi/L	Florence, MT	0-20 Years	No Basement/All Crawl Space	Oct 2024
3 pCi/L	Florence, MT	0-20 Years	No Basement/All Crawl Space	Oct 2016

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

Radon FAQ for Florence, MT

What is the average radon level in Florence, MT?

Based on 4 user-submitted tests, the average radon level in Florence is 9.50 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 Florence in?

Florence and the 59833 zip code are in Ravalli 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 Florence?

Radon mitigation in Florence 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 Florence?

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 Montana

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

City	Avg User Radon Level	Submissions
Butte	10.20 pCi/L	10
Missoula	6.25 pCi/L	8
Florence	11.67 pCi/L	3
Bozeman	10.33 pCi/L	3
Helena	8.67 pCi/L	3
Stevensville	7.67 pCi/L	3
Sidney	7.33 pCi/L	3
Billings	5.33 pCi/L	3
Miles City	3.33 pCi/L	3
Kalispell	7.50 pCi/L	2