Jacksonville, FL Radon Mitigation and Testing

Q: What is the average radon level in Jacksonville, FL?

Based on 1 user-submitted tests, the average radon level is 6.00 pCi/L.

Q: What EPA Radon Zone is Jacksonville in?

Jacksonville is in Duval County, EPA Zone 3.

Q: How much does radon mitigation cost in Jacksonville?

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

Avg: 6.00 pCi/L

Duval County

EPA Zone 3

1 user test

Florida's largest city by area, Jacksonville in Duval County sits on Coastal Plain sediments where phosphate-bearing formations can contribute to radon production. Current testing data shows an average radon level of 6.0 pCi/L, which exceeds the EPA action level and warrants mitigation consideration. While most Jacksonville homes feature slab-on-grade construction with limited basements, radon can still accumulate in enclosed spaces and lower levels of multi-story buildings.

6.00

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

Jacksonville, FL Radon Mitigation

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

Jacksonville, FL Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Jacksonville, Florida Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
6 pCi/L	Jacksonville, FL	0-20 Years	—	Jan 2026

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

Jacksonville Radon Facts

Key details about the radon risk profile for Jacksonville and the 32099 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Duval County, FL

Zip Code

32099

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Avg. User Submitted Level

6.00 pCi/L

User Tests Submitted

Jacksonville and the 32099 zip code are located in Duval County, which has an EPA assigned Radon Zone of 3. A radon zone of 3 predicts an average indoor radon screening level less than 2 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Jacksonville, FL

What is the average radon level in Jacksonville, FL?

Based on 1 user-submitted test, the average radon level in Jacksonville is 6.00 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 Jacksonville in?

Jacksonville and the 32099 zip code are in Duval County, which has an EPA assigned Radon Zone of 3. A zone of 3 predicts an average indoor radon screening level less than 2 pCi/L.

How much does radon mitigation cost in Jacksonville?

Radon mitigation in Jacksonville 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 Jacksonville?

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 Florida

Cities with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Ocala	8.31 pCi/L	16
Gainesville	7.09 pCi/L	11
Naples	7.00 pCi/L	11
Lakeland	9.83 pCi/L	6
Bradenton	4.80 pCi/L	5
Alachua	11.50 pCi/L	4
Cape Coral	5.75 pCi/L	4
Miami	5.25 pCi/L	4
North Port	5.25 pCi/L	4
Venice	5.25 pCi/L	4
Tallahassee	4.75 pCi/L	4
Orlando	4.25 pCi/L	4
Valrico	8.33 pCi/L	3
Bonita Springs	6.67 pCi/L	3
Lithia	5.00 pCi/L	3
Sarasota	4.00 pCi/L	3
Estero	6.50 pCi/L	2
Boynton Beach	20.00 pCi/L	1
Fort Lauderdale	14.00 pCi/L	1
Miami Beach	10.00 pCi/L	1