Skip Global navigation and goto content

It's a New Day in Public Health.

The Florida Department of Health works to protect, promote, and improve the health of all people in Florida through integrated state, county, and community efforts.

Skip MegaMenu and goto content
Left navigation requires javascript to be enabled in your browser.

Radon Testing Options

Florida Department of Health in St. Johns County Environmental Public Health Program


To Measure Radon Levels:

  • DIY—Buy a radon gas test kit and follow the directions.
  • OR—Hire a certified radon measurement business.
  • Did you know?
    • Picocurie per liter, or pCi/L, measures radon levels.
    • No radon level is safe.
    • A level at or above 4pCi/L is considered high.
    • 1 in 5 Florida Homes has an elevated radon level.

Who can test a building for radon?

Florida Certified radon measurement businesses can test for radon.  Homeowners may also test their house using over-the-counter (OTC) radon proficient devices available at local home improvement stores or through the internet. The OTC kits are simple to use and are relatively inexpensive (around $20 for short term tests and around $50 for long term tests). To purchase a do-it-yourself kit, check with your local home improvement hardware store or discount department store. Frequently they display radon test kits with the lead test kits, smoke alarms and carbon monoxide detectors. Reliable radon test kits are listed with the National Radon Proficiency Program or the National Radon Safety Board. Additionally, any test kit purchased and deployed needs to be returned to the laboratory for analysis. If you cannot find test kits available locally, search and purchase one online.

Another option is to hire a state certified radon testing company. Anyone offering professional radon services must have a Florida Department of Health Radon Certification. See a complete list of Radon Measurement Businesses by County. Need more options? Consider looking at businesses that have 'statewide' as their service area. Some companies have specialists and technicians in several areas or travel to different parts of the state as part of their normal business.

Where can I find a list of certified Radon Companies or Inspectors?

A complete list of Radon Measurement Businesses by County can be found at the Florida certified radon measurement business list. If you decide you want more options, consider looking at businesses that have 'statewide' as their service area. Some of those companies have specialists and technicians in several areas or travel to different parts of the state as part of their normal business.

Is it hard to test for radon? How long does it take to test for Radon?

Testing by a Florida Certified radon measurement businesses is easy.  Test kits have easy to follow directions. Testing is as simple as opening a package, placing a radon detector in your home in a designated area, and, after the prescribed number of days, sealing the detector back in the package and mailing it to a lab. The whole process only takes a few minutes of your time! If you conduct the test as specified you should obtain accurate results.