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Radon Levels in Puerto Rico

78 counties · EPA Region 2: New Jersey, New York, Puerto Rico, U.S. Virgin Islands

What this means for you

  • Your area: EPA has not published a radon zone for Puerto Rico.
  • Local tests: CDC has published no radon test results for Puerto Rico.
  • Your home: The only way to know your home’s level is to test it.
How to testFind a certified tester

pCi/L (picocuries per liter) is the unit radon is measured in. EPA recommends fixing a home at 4 pCi/L or above, its action level.

Predicted: EPA radon zone

No EPA zone on file for any county here

EPA has not published a radon zone for Puerto Rico.

This is a county-level geologic prediction. It is not a measurement of any address, and houses with elevated radon are found in all three zones.

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

CDC has published no radon test figures for Puerto Rico or its counties. Only a test tells you the level in a home.

Puerto Rico, In figures

Puerto Rico in figures

What the published data says about Puerto Rico, in words. A zone and a share of tests describe an area, never the level in any one home.

    • Predicted

      Predicted

      No EPA zone is on file for any of Puerto Rico's 78 counties.

  • Reported tests

    Measured

    CDC has no statewide testing figure for Puerto Rico on file here.

    No Puerto Rico county has a published CDC county figure on file here.

Puerto Rico, Counties

Puerto Rico counties by EPA zone

Predicted

All 78 counties, by the zone EPA predicts for each. Every county has its own report.

No EPA zone on file78

Puerto Rico, Local resources

Local resources in Puerto Rico

Who to ask in Puerto Rico: the state's radon program, test kits and professionals.

Puerto Rico's radon program

Every state has a radon office that answers questions about testing and local rules. Find Puerto Rico’s on the state radon programs list.

Test kits

Ask the program whether it has free or discounted kits, or compare kits you can buy.

Free and low-cost kitsCompare kits

Radon professionals

No professionals are listed in Puerto Rico yet. The state program can point you to registered testers and mitigators.

See the Puerto Rico directory

Puerto Rico, Questions

Questions about radon in Puerto Rico

Common questions8 questions, answered from the figures above

Is radon a problem in Puerto Rico?

EPA's Map of Radon Zones places 0 of the 78 Puerto Rico counties it classifies in Zone 1, the highest predicted potential, 0 in Zone 2 and 0 in Zone 3. An EPA radon zone describes predicted potential across a whole county. It is not intended to determine whether any individual home should be tested, and homes with elevated levels occur in all three zones. EPA recommends testing every home regardless of zone, and testing is the only way to know the radon level in a specific building.

Puerto Rico on the radon mapRadon levels by state

How do I get a radon test in Puerto Rico?

EPA says you can test your home yourself or hire a qualified radon test company, and that either approach takes only a small amount of time and effort. Your state radon program is the place to ask about certified testers and any test kit offer.

How to test a homeFree and low-cost kits by statePuerto Rico radon program

Who does radon mitigation in Puerto Rico?

Radon411 has no certified mitigators listed for Puerto Rico yet. EPA recommends having a qualified contractor fix a home with a radon problem, because lowering high radon levels takes technical knowledge and special skills, and some states require the work to be done by a licensed or certified professional.

How radon mitigation worksWhat mitigation costsRadon professionals in Puerto Rico

Which Puerto Rico counties have the highest radon?

EPA has not published a radon zone for Puerto Rico. Radon411 will not rank counties on data it does not hold, and a zone is a prediction for an area rather than a measurement of any building.

What share of radon tests in Puerto Rico are high?

CDC has published no statewide radon testing statistics for Puerto Rico, so we cannot give a figure. Where CDC does publish one, the percentage describes radon tests reported to CDC, not homes.

Which EPA region is Puerto Rico in?

Puerto Rico is in EPA Region 2: New Jersey, New York, Puerto Rico, U.S. Virgin Islands.

Do I need to test my home in Puerto Rico?

Yes, wherever you live in the state. Testing is the only way to know the radon level in a specific building. EPA recommends fixing a home when the radon level is 4 pCi/L or higher. EPA recommends considering a fix when the level is between 2 and 4 pCi/L.

Why does this page show coverage rather than one radon level for Puerto Rico?

A statewide figure averages counties with very different geology and very different numbers of reported tests, so it hides more than it shows. The county report is the level at which the EPA zone, the geologic potential and the reported testing statistics are actually published, which is why the county table above links to every one of them.

What these figures mean if you own, buy, sell or rent

This page holds no radon measurement for Puerto Rico yet, so there is nothing here that could stand in for testing your building.

  • If you own your home

    Test the lowest lived-in level; a short-term kit screens in days, a long-term kit reflects the year.

    How to test a home

  • If you are buying

    Ask for past results and any system's post-mitigation test, and test during the sale.

    Buying a house: radon guide

  • If you are selling

    Testing before you list puts the timing in your hands; disclosure rules differ by state.

    Selling a house: radon guide

  • If you rent, or rent out a home

    A tenant can test; a fix is the owner's to make, and duties differ by state.

    Radon in rental homes

How long a test has to run, under what conditions, and what EPA says a result means: the testing standard, in full.

Puerto Rico, Products

Testing and mitigation products

Whatever the figures for Puerto Rico show, only a test tells you about one home.

Testing

Mitigation

Puerto Rico, Keep reading

Keep reading

Looking for another state? Browse all state radon reports.

Puerto Rico / Next steps

What to do next

Informational. Follow EPA guidance. EPA says all radon tests should be taken for a minimum of 48 hours, with windows and doors closed from 12 hours before a short-term test.