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Radon Levels in St. John Island, U.S. Virgin Islands

EPA has no radon zone on file for St. John Island, 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 St. John Island.
Your home
Test to knowNo area figure here is a reading of your home.
How to test this homeFind a certified tester

The data

St. John Island, At a glance

St. John Island at a glance

Predicted: EPA radon zone

No EPA zone on file

Radon411 has no EPA radon zone on file for St. John Island, U.S. Virgin Islands, 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 St. John Island. Only a test tells you the level in a home.

Local help

St. John Island, Local resources

Radon testing and mitigation in St. John Island

Who tests and fixes radon in St. John Island: listed businesses, U.S. Virgin Islands' radon program and test kits.

Radon Action Brief

National Radon Action MonthPre-sale

St. John Island'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 St. John Island BriefSee a free sample

Area data, not a test of the building.

What it means

St. John Island, Questions

Questions about radon in St. John Island

Common questions

8 questions, answered from the figures above

Are radon levels high in St. John Island?

No CDC testing statistics are published here for St. John Island, U.S. Virgin Islands yet. Radon411 has no EPA zone on file for St. John Island, U.S. Virgin Islands. 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 U.S. Virgin Islands

How do I get a radon test in St. John Island?

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 St. John Island 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 checklistU.S. Virgin Islands radon program

Who does radon mitigation in St. John Island?

Radon411 has no radon business listed for U.S. Virgin Islands 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 U.S. Virgin Islands requires one.

Radon mitigation: how it worksRadon mitigation costRadon mitigation systemsU.S. Virgin Islands radon program

What EPA radon zone is St. John Island in?

Radon411 has no EPA Map of Radon Zones classification on file for St. John Island, U.S. Virgin Islands, 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 St. John Island?

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 St. John Island?

St. John Island borders 1 county equivalent, derived from Census county geometry. Radon potential follows geology rather than county lines, so a bordering county's report can be relevant.

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 St. John Island, U.S. Virgin Islands yet, so there is nothing here that could stand in for testing your building.

St. John Island in figures

The figures above, said in words

What the published data says about St. John Island, 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 St. John Island.

  • Reported tests and local record

    CDC has no annual testing figure for St. John Island on file here.

Products

St. John Island, Products

Testing and mitigation products

Whatever the figures for St. John Island 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 St. John Island homes, compared

Testing

5

Mitigation

3

Explore

St. John Island, Bordering county equivalents

County equivalents bordering St. John Island

Calculated by Radon411
Why bordering counties matter

One county equivalent shares a boundary with St. John Island, computed from Census county geometry. Radon potential follows geology rather than county lines, so a bordering county’s report can be worth reading alongside this one.

St. John Island, 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.