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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 knowNo area figure here is a reading of 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.

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.

Radon Action Brief

National Radon Action MonthPre-sale

Guam's radon brief, in one dated file.

  • Your area's radon record, explained.
  • Your plan to test this week.
  • Fix costs and pros near you.

Save 64%Sale price: $8.99Price after the sale: $25Ends Jan 31Then $25

Get the Guam BriefSee a free sample

Area data, not a test of the building.

What it means

Guam, Questions

Questions about radon in Guam

Common questions

8 questions, answered from the figures above

Is radon a problem in Guam?

EPA's Map of Radon Zones places 0 of the 1 Guam county equivalent 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.

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, 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 stateGuam radon program

Who does radon mitigation in Guam?

Radon411 has no radon business listed for Guam 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 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 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 Guam?

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.

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 and mitigation products

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

Test kits and monitors42

See all products

As an Amazon Associate, Radon411 earns from qualifying purchases.

Best radon monitors for Guam homes, compared

Testing

5

Mitigation

3

Explore

Guam, Next steps

What to do next

  1. LearnKnow what radon isWhat radon is, how it gets indoors, and why a county zone is not a reading for your home.Learn about radon
  2. TestTest the building you live inShort-term or long-term, where the device goes, and closed-house conditions.How to test
  3. FixBring a high level downHow a mitigation system works, and the retest that confirms it.How mitigation works
  4. Find a proHire a certified professionalMeasurement and mitigation professionals by state, with their certifications.Find a professional

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.