Listed for: Testing
Verified:Florida state license
Call Apollo Environmental, Inc. at (800) 348-3181No website listed
Locations and reports
Radon in Tampa, Florida
EPA puts Hillsborough County, where Tampa is, in Zone 2, its middle radon zone, and most reported tests there come back low, though 7.5% of 984 (2023) reached 4 pCi/L. Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Share at 4+ pCi/L
7.5%
11.0 pts below FL
- Hillsborough
- 7.5%
- Florida
- 18.5%
Hillsborough, 15th of 30 in FL, 2023
Median result
0.9pCi/L
Below action level
- Hillsborough
- 0.9 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of Hillsborough's tests, 2023
Nearest county
5.9%
Pinellas, 18 miles
- Pinellas
- 5.9%
- Hillsborough
- 7.5%
559 tests, 2023
EPA radon zone
Zone 2
Moderate potential
- 1
- Zone 2
- 3
1 highest, 3 lowest
Hillsborough, where Tampa is
Tests reported
984
In Hillsborough
- Hillsborough
- 984
- Pinellas
- 559
Reported to CDC before any fix, 2023
Read a result for Tampa
Starts at Hillsborough County's median, 0.9 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 0.9 pCi/L
Below 2 pCi/L
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 4 and aboveEPA says fix it
This result is below 2 pCi/L, the level at which EPA says a fix should be considered. Hillsborough County's median reported result, 2023.
The data
Tampa, What is published
What is published for Tampa
Information:
Every figure for Tampa is a county's
Radon data is published by county, not by city, so for Tampa it is Hillsborough County's: its EPA zone (Zone 2) and the 984 tests reported to CDC for 2023. Only a test tells you about one home.
Tampa covers 114 square miles of land, all of it in Hillsborough County. About 413,554 people live there, 3,627 to the square mile.
Tampa, Counties
The county Tampa lies in
MeasuredHillsborough County's EPA zone and the figures CDC publishes for it, 2023.
Hillsborough CountyZone 2Moderate predicted potential
- 7.5%
- Reported tests at or above 4 pCi/L
- 0.9 pCi/L
- Median reported result
- 984 tests
- Tests reported to CDC
- 10
- Annual years on file
Hillsborough County ranks 15th of 30 Florida counties with 30 or more tests for that period, 11.0 points below the 18.5% pooled across Florida's counties, 25.9 points below the national pool of 33.4%.
Measured from the middle of Tampa, the nearest counties with a CDC figure for 2023 are Pinellas County (18 miles, 5.9% of 559 tests), Pasco County (22 miles, 0.6% of 164 tests) and Manatee County (37 miles, 11.0% of 263 tests). Across the 8 nearest, the share at or above 4 pCi/L runs from 0.0% to 12.3%; the farthest of them, Osceola County, is 79 miles away at 1.4%.
The directory lists 4 businesses with an address in Tampa, 4 for testing and 1 for mitigation. Florida's other cities with a page of their own: Naples, Gainesville, Miami and Venice.
The counties around Tampa
By distance from the middle of Tampa; counties with 30 or more tests.
Predicted: EPA Map of Radon Zones, by county. Measured: CDC tracking data, by county, 2023.
Tampa, Geology
The ground under Tampa
PredictedUSGS's geologic map puts all of Tampa's mapped land in one class: low radon potential. 92.8% of it lies in the area the map calls Gulf/Atlantic Lowland and Central Highland, to which USGS gives a radon index of 6, in the low band (5 to 8).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Gulf/Atlantic Lowland and Central Highland | sand, silt, clay, gravel | Low | 6 | 92.8% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Tampa beside its county and Florida
Hillsborough County as a whole has 41.4% of its land rated moderate; none of that ground lies under Tampa. Across Florida 7.1% of the land is rated moderate; none of Tampa's is.
The map rates the ground, not the air in any home.
Tampa, Homes
Homes in Tampa
Tampa has 177,076 homes, and many share a building: 34% are in buildings of five or more, 51% are detached houses, against 57% across Hillsborough County. Half of its homes were built before 1984, close to Hillsborough County's 1990: 26% date from before 1960 and 32% from 2000 or later. 50% of occupied homes are lived in by their owner (Hillsborough County: 61%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Tampa | Hillsborough County | Florida |
|---|---|---|---|
| Housing units | 177,076 | 618,220 | 10,082,356 |
| Detached houses | 51% | 57% | 55% |
| In buildings of 5 or more | 34% | 23% | 25% |
| Mobile homes | 1% | 7% | 8% |
| Built before 1960 | 26% | 11% | 10% |
| Built since 2000 | 32% | 36% | 30% |
| Middle year built | 1984 | 1990 | 1988 |
| Owner-occupied | 50% | 61% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.
Local help
Tampa, Professionals
Radon professionals listed in Tampa
Businesses whose listed city is Tampa, from the state registries and listings in the Radon411 directory, with the same business and certification status the directory shows.
Radon professionals listed in Tampa: 1 of 4
4 listings with Tampa as the city. See radon mitigation and testing in Tampa, or all radon professionals in Florida.
Tampa, Local resources
Local resources for Tampa
Who to ask in Florida: its radon program, test kits and professionals.
What it means
Tampa, Questions
Questions about radon in Tampa
What radon zone is Tampa in?
Tampa has no zone of its own: it shares Hillsborough County's, Zone 2, the map's middle class: a predicted county average of 2 to 4 pCi/L.
What are radon levels in Tampa?
Reported levels around Tampa run low: 7.5% of 984 tests from Hillsborough County for 2023 reached 4 pCi/L. The median reported result was 0.9 pCi/L. Low is not none.
Should I test my home in Tampa?
Yes, even here. Hillsborough County reported 74 of 984 tests at or above 4 pCi/L. That is below Florida's pooled 18.5%, and still not a reason to skip it, and ranks Hillsborough County 15th of the 30 Florida counties with 30 or more tests. Testing found those homes; the county's low share did not. How to test a home.
What ground is Tampa built on, as far as radon goes?
USGS's geologic map puts 92.8% of Tampa on one named area, "Gulf/Atlantic Lowland and Central Highland", rated low for radon potential, radon index 6.
Is radon higher in the counties around Tampa?
It depends which way you go. 4 of the 8 nearest counties with a figure report a larger share than Hillsborough County's 7.5% and 4 a smaller one: from Lake County (0.0%, 69 miles off) to Sarasota County (12.3%, 56 miles off).
Who tests for or fixes radon in Tampa?
Tampa is the address of 4 businesses in Radon411's directory, 4 listed for testing and 1 for mitigation. Each entry names the public list it came from. Radon professionals in Tampa.
The answers use the published figures of Hillsborough County, the county Tampa lies in.
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