Skip to content
RADON411

Locations and reports

Radon Levels in Broward County, Florida

EPA puts Broward County in Zone 3, its lowest radon zone, and most reported tests there come back low, though 9.4% of 2,165 (2023) reached 4 pCi/L. Homes with elevated levels occur in all three zones, so only a test measures yours.

Data checked By Radon411Methodology

How to test this homeFind a certified tester

  • Share at 4+ pCi/L

    9.4%

    9.1 pts below FL

    Broward
    9.4%
    Florida
    18.5%

    2,165 tests, 2023

  • Median result

    1.7pCi/L

    Below action level

    Broward
    1.7 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2023

  • Tests reported

    2,165

    Most tested in Florida

    Broward
    2,165

    Reported to CDC before any fix, 2023

  • EPA radon zone

    Zone 3

    Lower potential

    1. 1
    2. 2
    3. Zone 3

    1 highest, 3 lowest

    EPA predicts under 2 pCi/L indoors

  • Rank in Florida

    14 of 30

    Middle half

    Broward
    9.4%
    Marion
    44.5%

    By share, of 30 with 30+ tests

Read a result for Broward County

Starts at Broward County's median, 1.7 pCi/L

1.7pCi/L

EPA’s own thresholds; the figures are the area’s, never this home’s.

EPA’s reading of 1.7 pCi/L

Below 2 pCi/L

  1. Under 20 to 1.9 pCi/L
  2. 2 to 4consider a fix
  3. 4 and aboveEPA says fix it

This result is below 2 pCi/L, the level at which EPA says a fix should be considered. Broward County's median reported result, 2023.

Interpret this reading

The data

Broward County, At a glance

Broward County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for Broward County as a whole is an average indoor of less than 2 pCi/L (less than 75 Bq/m³). A low zone clears no address in it: homes above EPA's turn up in all three zones.

USGS geologic potential: Low across 100% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

Radon tests reported for Broward County, 2023

Share of reported tests at or above 4 pCi/L, by year, Broward County
Share of reported tests at or above 4 pCi/L, by year, Broward County
YearShare of reported tests at or above 4 pCi/L
201431.7%
201556.3%
201649.1%
201712.7%
201838.7%
201959.4%
202034.7%
202121.5%
202250.8%
20239.4%

2023: 9.4%. Across these years the share ran from 9.4% to 59.4%. Each column counts radon tests reported to CDC that year, not homes.

What these figures count

These are the 2,165 tests reported to CDC for Broward County over 2023, many from homes being sold or already suspected of a problem: they describe the county's reported tests, not this house.

Measured: CDC tracking data. Figure above: 2023. Measured data period: 2005 to 2023 (every CDC figure on file).

How to read these figures

Broward County, Compared

Broward County radon figures, compared

Calculated by Radon411

Broward County reports fewer high tests than Florida overall. 9.4% of its 2,165 tests in 2023 were at or above 4 pCi/L. That is 9.1 points below the 18.5% pooled from 49 Florida counties.

Ordered from highest share down, it comes 14th of 30 Florida counties with 30 or more tests for the same period. Nationally, every county with a figure for the same period pools to 33.4%; Broward County sits 24.0 points below it.

Next door, the shares run from 22.7% in Collier County to 40.1% in Palm Beach County. Zone 3 on EPA's map (predicted average under 2 pCi/L) and a 9.4% share point the same way here.

Half the tests came in under 1.7 pCi/L and half over it; the single highest reached 43.9 pCi/L. The rest split 55.4% under 2 pCi/L and 35.2% from 2 to 4 (Florida: 57.3% and 24.2%). Year by year, 2014 opened at 31.7% and 2023 closed at 9.4% (down 22.3 points), with 2019 the high at 59.4%.

The busiest year on file was 2022, with 7,062 tests reported; the quietest, 2016, had 318.

Share of reported tests at or above 4 pCi/L by year, Broward County against Florida2014 to 2023, years with 30 or more tests: Broward County 31.7% to 9.4%, the state's pooled share 18.5% in 2023.
Broward CountyFlorida, pooled
Share of reported tests at or above 4 pCi/L by year, Broward County against Florida: data table
YearTestsBroward County, at or above 4 pCi/LFlorida, pooled
201450231.7%25.7%
201582156.3%26.5%
201631849.1%24.3%
201799812.7%21.7%
20181,28938.7%23.5%
20191,36159.4%29.6%
202091334.7%23.2%
202198021.5%15.4%
20227,06250.8%22.8%
20232,1659.4%18.5%
Broward County against Florida, the United States and nearby counties, 2023
AreaTestsAt or above 4 pCi/LMedianDifference from Broward County
Broward County2,1659.4%1.7 pCi/LThis county
Florida, pooled49 counties, pooled16,58918.5%Not pooled+9.1 points
United States, pooled642 counties, pooled128,74033.4%Not pooled+24.0 points
Marion Countyhighest in the state18244.5%3.6 pCi/L+35.1 points
Clay Countylowest in the state360.0%1.0 pCi/L−9.4 points
Palm Beach County, FLborders it1,52640.1%3.0 pCi/L+30.7 points
Miami-Dade County, FLborders it1,91939.6%2.8 pCi/L+30.2 points
Collier County, FLborders it1,60722.7%2.3 pCi/L+13.3 points
Hendry County, FLborders it30.0%1.3 pCi/L−9.4 points
Where Broward County's reported results fell, 2023, beside Florida and the United States
ResultBroward County testsBroward County shareFlorida shareU.S. shareAgainst Florida
Under 2 pCi/L1,19955.4%57.3%41.4%−1.9 points
2 to 4 pCi/L76235.2%24.2%25.2%+11.0 points
4 pCi/L and above2049.4%18.5%33.4%−9.1 points
Broward County ranked among the 30 Florida counties with 30 or more tests, by share at or above 4 pCi/L, 2023
CountyRankTestsAt or above 4 pCi/LMedian
Gadsden County9 of 309614.6%1.3 pCi/L
Sarasota County10 of 3049612.3%1.6 pCi/L
Polk County11 of 3013611.0%1.1 pCi/L
Manatee County12 of 3026311.0%1.5 pCi/L
Orange County13 of 301,1079.5%0.9 pCi/L
Broward County14 of 302,1659.4%1.7 pCi/L
Hillsborough County15 of 309847.5%0.9 pCi/L
Duval County16 of 307926.2%0.4 pCi/L
Pinellas County17 of 305595.9%1.2 pCi/L
Wakulla County18 of 30313.2%0.8 pCi/L
Seminole County19 of 301901.6%0.6 pCi/L
Broward County radon tests by year, against Florida's pooled share
YearTestsAt or above 4 pCi/LMedianHighestFlorida, pooledChange from the row before
20232,1659.4%1.7 pCi/L43.9 pCi/L18.5%−41.4 points
20227,06250.8%4.0 pCi/L23.5 pCi/L22.8%+29.3 points
202198021.5%1.7 pCi/L26.2 pCi/L15.4%−13.2 points
202091334.7%2.6 pCi/L20.0 pCi/L23.2%−24.7 points
20191,36159.4%5.0 pCi/L33.9 pCi/L29.6%+20.7 points
20181,28938.7%3.3 pCi/L18.5 pCi/L23.5%+26.0 points
201799812.7%1.8 pCi/L114.0 pCi/L21.7%−36.4 points
201631849.1%3.9 pCi/L16.7 pCi/L24.3%−7.2 points
201582156.3%5.0 pCi/L27.0 pCi/L26.5%+24.6 points
201450231.7%2.3 pCi/L25.0 pCi/L25.7%First on file

Pooled shares: Radon411's sum of CDC's county counts for one period.

Broward County, Geology

The ground under Broward County

Predicted

USGS's geologic map puts all of Broward County's mapped land in one class: low radon potential. All 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).

USGS's geologic areas under Broward County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Gulf/Atlantic Lowland and Central Highlandsand, silt, clay, gravelLow699.9%

Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.

Broward County beside the ground around it

Across Florida 7.1% of the land is rated moderate; none of Broward County's is. Of the 4 counties that border it, 1 has more moderate-potential ground, Miami-Dade County the most at 17.5%.

Share of land by USGS radon potential: Broward County, the 4 counties bordering it and Florida
AreaEPA zoneLow potentialModerate potentialHigh potential
Broward CountyZone 399.9%NoneNone
Miami-Dade CountyZone 279.5%17.5%None
Palm Beach CountyZone 399.1%NoneNone
Collier CountyZone 396.9%NoneNone
Hendry CountyZone 3100%NoneNone
Florida67 counties, pooled by land areaVaries89.7%7.1%None

The map rates the ground, not the air in any home.

Local help

Broward County, Local resources

Radon testing and mitigation in Broward County

Listed radon businesses with an address in Broward County:

Listed radon professionals by town: Fort Lauderdale, Pembroke Pines, Coral Springs, Pompano Beach, Plantation, Weston, Oakland Park, Lauderdale Lakes

What Florida's program says
Phone
850-245-4288
Email
PHtoxicology@FLhealth.gov
Licensing of radon professionals
Florida Statutes require the certification of businesses and individuals providing radon services or any other radon related activity.

What it means

Broward County, Questions

Questions about radon in Broward County

Are radon levels high in Broward County?

In 2023, 9.4% of the radon tests reported to CDC for Broward County, Florida were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.7 pCi/L. Of 30 Florida counties with 30 or more tests for the same period, 13 reported a higher share; pooled, the state comes to 18.5%.

Which counties border Broward County?

Broward County borders 4 counties: Miami-Dade County, Palm Beach County, Collier County and Hendry County.

Products

Broward County, Products

Testing a home in Broward County

In Broward County, 9.4% of 2,165 tests reported to CDC in 2023 reached 4 pCi/L, against 18.5% pooled across Florida. Zone 3 is the lowest label, yet homes at or above 4 pCi/L occur in every zone: a short-term kit (2 to 90 days) is the quick first check in Broward County.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Broward County homes, compared

Explore

Broward County, Bordering counties

Counties bordering Broward County

Calculated by Radon411

Broward County, Cities and towns

Cities and towns in Broward County

The Census Bureau estimates 2,013,317 residents in Broward County for July 1, 2025, 69,880 more than in 2020 (+3.6%). Packed into its land, that is 1,674 people per square mile. No town dominates: Fort Lauderdale, the largest, has 188,677 residents, 9.4% of the total. Together its 31 incorporated places hold 99.1% of those residents; the other 0.9% live outside any of them. Testing is reported here more often than across the state: CDC's 2,165 reported tests for 2023 come to 1.1 for every 1,000 residents (2025 estimate), against 0.7 for Florida.

From Fort Lauderdale to Lazy Lake, CDC publishes no figure by town: each reads Broward County's.

The 12 largest cities and towns in Broward County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Fort Lauderdale188,677+3.3%9.4%
Pembroke Pines176,714+3.3%8.8%
Hollywood157,019+2.8%7.8%
Miramar142,570+6.0%7.1%
Coral Springs138,783+3.4%6.9%
Pompano Beach117,211+4.7%5.8%
Davie110,851+4.5%5.5%
Plantation99,183+7.9%4.9%
Sunrise98,846+1.7%4.9%
Deerfield Beach89,339+3.0%4.4%
Lauderhill75,668+1.7%3.8%
Tamarac74,134+3.1%3.7%
  • Weston
  • Margate
  • Coconut Creek
  • North Lauderdale
  • Oakland Park
  • Hallandale Beach
  • Parkland
  • Lauderdale Lakes
  • Cooper City
  • Dania Beach
  • West Park
  • Wilton Manors
  • Lighthouse Point
  • Southwest Ranches
  • Pembroke Park
  • Lauderdale-by-the-Sea
  • Hillsboro Beach
  • Sea Ranch Lakes
  • Lazy Lake

31 incorporated places, as listed in the U.S. Census Bureau’s 2020 place reference files. Residents: U.S. Census Bureau population estimates for July 1, 2025 (Vintage 2025).

Broward County, Homes

Homes in Broward County

Broward County has 863,128 homes, and many share a building: 42% are in buildings of five or more, 40% are detached houses, against 55% across Florida. The homes are older than Florida's as a whole: half were built before 1980 (1988 for Florida), and 11% date from before 1960. 63% of occupied homes are lived in by their owner (Florida: 67%); in the rest a tenant can run a test, but a fix is the landlord's to make.

Homes in Broward County, Florida, 2019 to 2023
HomesBroward CountyFlorida
Housing units863,12810,082,356
Detached houses40%55%
In buildings of 5 or more42%25%
Mobile homes3%8%
Built before 196011%10%
Built since 200017%30%
Middle year built19801988
Owner-occupied63%67%

Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.