Locations and reports
Radon Levels in Petersburg, Alaska
What this means for you
- Your area: EPA has no radon zone on file for Petersburg.
- Local tests: Of 1 radon tests reported to CDC for Petersburg (2022), 0.0% were at or above 4 pCi/L, EPA's action level.
- Your home: The only way to know your home’s level is to test it.
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.
In 2022, 0.0% of the radon tests reported to CDC for Petersburg, Alaska came back at or above the EPA action level of 4 pCi/L, and the median result was 0.2 pCi/L. Radon levels vary from home to home, so only a test measures the level in yours.
Predicted: EPA radon zone
No EPA zone on file
Radon411 has no EPA radon zone on file for Petersburg, Alaska, 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.
USGS geologic potential: Moderate across 93% of the county's land area
Predicted: no EPA zone on file yet
Measured: tests reported to CDC
Radon tests reported for Petersburg, 2022
- Tests reported
- 1
- At or above 4 pCi/L
- 0.0%
- Median result
- 0.2 pCi/L
Of 1 pre-mitigation tests reported to CDC, not homes in this area. CDC publishes the share in each band, not a count per band, so the per-band counts in the table are calculated by Radon411 and rounded to add up to the published total.
| Result band | Tests Calculated by Radon411 | Share Measured |
|---|---|---|
| Under 2 pCi/L | 1 | 100.0% |
| 2 to 4 pCi/L | 0 | 0.0% |
| 4 pCi/L and above | 0 | 0.0% |
Distribution of tested buildings, not this house. People testing before a sale, or because they suspect a problem, are over-represented in any reported testing data.
Measured: CDC tracking data. Measured data period: 2022.
Petersburg, In figures
Petersburg in figures
What the published data says about Petersburg, in words. A zone and a share of tests describe an area, never the level in any one home.
Predicted
PredictedNo EPA zone is on file here for Petersburg.
Reported tests
MeasuredCDC has one annual figure for Petersburg on file here, for 2022: 0.0% of 1 reported tests were at or above 4 pCi/L.
Local record
Alaska's radon program is the Alaska Radon Program, run by Alaska Division of Geological & Geophysical Surveys; its contacts are under Local resources.
The county's largest incorporated place is Kupreanof; the figures here cover them as part of the county.
Petersburg, Comparison
How Petersburg compares
MeasuredPetersburg's own published CDC figures beside those of the counties that border it, for the same period.
Share of reported tests at or above 4 pCi/L
Measured2022, highest first. Each county’s own published CDC figure.
- Hoonah-AngoonAK1 test0.0%
- PetersburgThis page1 test0.0%
- Prince of Wales-HyderAK1 test0.0%
- WrangellAK4 tests0.0%
Median reported result
Measured2022, highest first. Each county’s own published CDC figure.
- WrangellAK4 tests0.6 pCi/L
- Hoonah-AngoonAK1 test0.4 pCi/L
- Prince of Wales-HyderAK1 test0.4 pCi/L
- PetersburgThis page1 test0.2 pCi/L
Each figure is that county’s own published CDC figure for 2022, counting radon tests reported to CDC, not homes. Petersburg is this page. Nothing is averaged or combined across counties. The test count beside each county is CDC’s published number of pre-mitigation tests behind its figures. Figures from few tests can swing widely from year to year. Every Alaska county’s own figure is in the Alaska county table.
CDC publishes this figure only for counties here, so there is no state or national number to compare Petersburg, Alaska with.
Petersburg, Bordering counties
Counties bordering Petersburg
Calculated by Radon4113 counties share a boundary with Petersburg, 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.
Petersburg, Local resources
Local resources in Alaska
Who to ask in Alaska: the state's radon program, test kits and professionals.
Alaska Radon Program
Alaska Division of Geological & Geophysical Surveys
Alaska’s radon program answers questions about testing, mitigation and the rules where you live.
- Phone
- 907-269-6401
- paul.goodfellow@alaska.gov
Test kits
The program says: Please register your interest in a free radon testing kit on our website and we will resume mailing out tests starting in December 2026.
Radon professionals
No professionals are listed in Alaska yet. The state program can point you to registered testers and mitigators.
See the Alaska directoryPetersburg, Cities and towns
Cities and towns in Petersburg
The radon figures on this page are for Petersburg as a whole. They do not differ by city or town.
- Kupreanof
One incorporated place, as listed in the U.S. Census Bureau’s 2020 place reference files.
Petersburg, Questions
Questions about radon in Petersburg
Common questions8 questions, answered from the figures above
Are radon levels high in Petersburg?
In 2022, 0.0% of the radon tests reported to CDC for Petersburg, Alaska were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.2 pCi/L. That is a share of reported tests, not of homes. Radon411 has no EPA zone on file for Petersburg, Alaska. 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.
How do I get a radon test in Petersburg?
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 certified tester listed on Radon411 names Petersburg as a service area yet. The Alaska radon program is the place to ask about certified testers and any test kit offer it runs.
How to test a homeTest kits comparedFree and low-cost kits by stateAlaska radon program
Who does radon mitigation in Petersburg?
Radon411 has no certified mitigators listed for Alaska 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 Alaska requires one.
How radon mitigation worksWhat mitigation costsAlaska radon program
What EPA radon zone is Petersburg in?
Radon411 has no EPA Map of Radon Zones classification on file for Petersburg, Alaska, 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 Petersburg?
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 Petersburg?
Petersburg borders 3 counties, derived from Census county geometry. Radon potential follows geology rather than county lines, so a bordering county's report can be relevant.
What these figures mean if you own, buy, sell or rent
The reported-test figures on this page describe Petersburg, Alaska in 2022. They describe tests other people carried out in other buildings, and none of them measures yours.
- How to test a home
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.
- Buying a house: radon guide
If you are buying
Ask for past results and any system's post-mitigation test, and test during the sale.
- Selling a house: radon guide
If you are selling
Testing before you list puts the timing in your hands; disclosure rules differ by state.
- Radon in rental homes
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.
How long a test has to run, under what conditions, and what EPA says a result means: the testing standard, in full.
Petersburg, Products
Testing and mitigation products
Whatever the figures for Petersburg show, only a test tells you about one home.
Testing
- Short-term test kitsPassive detectors exposed for a few days under closed-building conditions, then analyzed by a lab.
- Long-term test kitsDetectors exposed for more than 90 days, for a closer picture of the annual average.
- Continuous monitorsPowered devices that log radon on a repeating cycle, often used for transaction tests.
- Digital detectorsConsumer devices that display a running radon reading without a lab.
- Water radon testsKits for radon dissolved in well water, analyzed by a lab.
Mitigation
- Mitigation fansThe inline fan that keeps a soil depressurization system running, sized by the installer.
- System indicatorsU-tube manometers and fan alarms that show whether a mitigation system is still working.
- Sealing materialsCrack, joint and sump sealing used alongside a mitigation system, not instead of one.
Petersburg / Next steps
What to do next
Learn
Know what radon is
What radon is, how it gets indoors, and why a county zone is not a reading for your home.
Learn about radonTest
Test the building you live in
Short-term or long-term, where the device goes, and closed-house conditions.
How to testFix
Bring a high level down
How a mitigation system works, and the retest that confirms it.
How mitigation worksFind a pro
Hire a certified professional
Measurement 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.