Skip to content
RADON411

Locations and reports

Guam Radon Map and Levels

EPA has not published a radon zone for Guam. The only way to know your home's level is to test it.

Data checked By Radon411Methodology

Predicted
No zoneEPA has no zone on file here, and Radon411 does not guess one.
Measured
No CDC figureCDC has published no radon test figures for Guam.
Your home
Test to knowOnly a test reads your home.
How to test this homeFind a certified tester

The data

Guam, At a glance

Guam at a glance

Predicted: EPA radon zone

No EPA zone on file

EPA has not published a radon zone for Guam.

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

No CDC test figures here

CDC has published no radon test figures for Guam. Only a test tells you the level in a home.

How to read these figures

Guam, County equivalents

Guam by EPA zone

Predicted

Guam is one county-level area, and it has its own county report.

No EPA zone on file1

Local help

Guam, Local resources

Local resources in Guam

Who to ask in Guam: its radon program, test kits and professionals.

What it means

Guam, Questions

Questions about radon in Guam

Common questions

7 questions, answered from the figures above

Is radon a problem in Guam?

Of the 1 county equivalent in Guam that EPA's Map of Radon Zones classifies, 0 carry Zone 1 (the highest predicted potential), 0 Zone 2 and 0 Zone 3. An EPA radon zone predicts a whole county. It is not intended to determine whether any individual home should be tested: homes with elevated levels occur in all three zones, and EPA recommends testing every home regardless of zone.

Guam on the radon mapRadon levels by state

How do I get a radon test in Guam?

EPA says you can test your home yourself or hire a qualified radon test company. 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 stateGuam radon program

Who does radon mitigation in Guam?

Radon411 has no radon business listed for Guam yet. EPA recommends a qualified contractor for the fix, and some states require a licensed or certified professional.

How radon mitigation worksWhat mitigation costsRadon professionals in Guam

Which Guam counties have the highest radon?

EPA has not published a radon zone for Guam. 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 Guam are high?

CDC has published no statewide radon testing statistics for Guam, 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 Guam in?

Guam is in EPA Region 9: Pacific Southwest.

Do I need to test my home in Guam?

Yes, wherever you live in Guam. 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.

If you own, buy, sell or rent

What these figures mean for each reader, with the guide that covers it

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

Guam in figures

The figures above, said in words

What the published data says about Guam, 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 Guam, which is one county-level area.

  • Reported tests

    Measured

    CDC has no statewide testing figure for Guam on file here.

    No Guam county equivalent has a published CDC county figure on file here.

Products

Guam, Products

Testing a home in Guam

A short-term kit (2 to 90 days) is the quick first check for a home in Guam; a long-term test tells the year-round average.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Guam homes, compared

Explore