11%tests ≥ 4 pCi/L
196tests on record
0.8median pCi/L
Zone 3EPA zone (1993 prediction)

Test results in Martin County

ResultShareEPA guidance
Below 2 pCi/L79%Below EPA's levels
2 to 4 pCi/L10%Consider fixing
4 pCi/L or more11%EPA recommends fixing

What the data shows

Where Martin County sits among Florida's 62 counties with dataEach dot is a county's share of tests at or above 4 pCi/L · Radon test results from laboratories, 2008–2017
0%20%40%60%80%100%

How Martin County compares

Martin County has the highest share of high results among its neighboursShare of tests at or above 4 pCi/L · Radon test results from laboratories, 2008–2017 · whisker: 95% range
Martin County11%Palm Beach County8%Hendry County7%Glades County0%Okeechobee County0%St. Lucie County0%Florida 23%
Data table
AreaTests ≥ 4 pCi/LTests
Martin County11%196
Palm Beach County8%994
Hendry County7%14
Glades County0%3
Okeechobee County0%3
St. Lucie County0%46
Florida (62 counties)23%53,794

Same source as Martin County.

What it means for your home

About 1 in 9 results in Martin County were at or above 4 pCi/L, where the EPA recommends a fix. Only a test shows your own home's level.

Levels in pCi/L from the EPA. The WHO reference level is 100 Bq/m³, about 2.7 pCi/L.

Test your home

Start with a short-term test (2–90 days) and confirm a result of 4 pCi/L or more with a second test. EPA guide

Sponsored: we earn a commission on purchases through these links. We haven't tested Airthings monitors yet.

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Fixing high radon

No local job records yet. National range: $800–$2,500, average $1,200 (EPA, 2003). Cost guide →

About this data

Source: Radon test results from laboratories (CDC Environmental Public Health Tracking Network). Period: 2008–2017. Tests: 196. Read the methodology →

These are voluntary and real-estate tests, not a random sample of homes, so they describe tested homes rather than every home.

About this page

Published by Ray Roman, editor of Radon by County. Figures are loaded from the cited source and spot-checked against it. Editorial policy · About us