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Radon Levels in Guam

EPA has no radon zone on file for Guam, and the only way to know your home's level is to test it.

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

Radon411 has no EPA radon zone on file for Guam, and it does not guess one.

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: no EPA zone on file yet

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.

Local help

Guam, Local resources

Radon testing and mitigation in Guam

Who tests and fixes radon in Guam: listed businesses, Guam's radon program and test kits.

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

Are radon levels high in Guam?

No CDC testing statistics are published here for Guam yet. Radon411 has no EPA zone on file for Guam. Homes with elevated levels occur in all three zones, so the figures describe the area, not your house. Testing is the only way to know the radon level in a specific building.

Radon levels: what a result meansWhat is radon?Radon levels in Guam

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. No radon testing business listed on Radon411 has an address in Guam or names it as a service area yet. Your state radon program is the place to ask about certified testers and any test kit offer.

Radon testing: how to test a homeRadon test kits comparedFree and low-cost kits by stateRadon Action Month checklistGuam 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. Your state radon program is the place to check whether Guam requires one.

Radon mitigation: how it worksRadon mitigation costRadon mitigation systemsGuam radon program

What EPA radon zone is Guam in?

Radon411 has no EPA Map of Radon Zones classification on file for Guam, so we are not going to state one. EPA's recommendation does not depend on the zone in any case: test every home.

Should I test my home in Guam?

Yes. 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. How to test a home.

When is the best time of year to test?

EPA says short-term tests stay in the home from 2 to 90 days and that all radon tests should run a minimum of 48 hours; long-term tests stay more than 90 days. EPA's guides do not name a best season: they say radon levels tend to vary from day to day and season to season, so a long-term test is more likely than a short-term test to tell you the year-round average.

What does it cost to test?

EPA's Citizen's Guide calls testing easy and inexpensive, and EPA's Home Buyer's and Seller's Guide says passive short-term and long-term devices are generally inexpensive, while active devices may cost more. No national average price is published for this, so Radon411 does not give one. What testing costs.

Which counties border Guam?

No county is recorded as sharing a land boundary with Guam.

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 here for Guam.

  • Reported tests and local record

    CDC has no annual testing figure for Guam 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, Bordering county equivalents

County equivalents bordering Guam

Calculated by Radon411

No bordering counties on file

Guam has no county recorded as sharing a land boundary with it. Island and coastal county equivalents legitimately have none.

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.