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Radon Levels in Winston County, Mississippi

Zone 3Lower predicted potential612 square miles · 7 bordering counties

What this means for you

  • Your area: EPA rates Winston County Zone 3, the lowest of its three radon zones. That is a prediction for the whole county, and homes with elevated levels occur in all three zones.
  • Local tests: CDC has published no radon test results for Winston County.
  • 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.

EPA's Map of Radon Zones places Winston County, Mississippi in Zone 3, lower predicted potential, a prediction for the whole county. Radon levels vary from home to home, so only a test measures the level in yours.

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

EPA predicts an average indoor of less than 2 pCi/L (less than 75 Bq/m³) across the county as a whole.

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: High across 100% of the county's land area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

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

Winston County, In figures

Winston County in figures

What the published data says about Winston County, in words. A zone and a share of tests describe an area, never the level in any one home.

    • Predicted

      Predicted

      EPA places Winston County in Zone 3, lower predicted potential, as it does 73 other counties of Mississippi's 82.

      Of the 7 bordering counties, EPA places Noxubee County in Zone 2 and Attala County, Choctaw County, Kemper County, Leake County, Neshoba County and Oktibbeha County in Zone 3.

  • Reported tests

    Measured

    CDC has no annual testing figure for Winston County on file here.

  • Local record

    Mississippi's radon program is the Mississippi Radon Program, run by Mississippi State Department of Health; its contacts are under Local resources.

    The county's largest incorporated places are Louisville and Noxapater; the figures here cover them as part of the county.

Winston County, Bordering counties

Counties bordering Winston County

Calculated by Radon411

Winston County, Local resources

Local resources in Mississippi

Who to ask in Mississippi: the state's radon program, test kits and professionals.

Mississippi Radon Program

Mississippi State Department of Health

Mississippi’s radon program answers questions about testing, mitigation and the rules where you live.

Phone
1-800-626-7739
Visit the program's page(opens in a new tab)

Test kits

Ask the program whether it has free or discounted kits, or compare kits you can buy.

Radon professionals

No professionals are listed in Mississippi yet. The state program can point you to registered testers and mitigators.

See the Mississippi directory

Winston County, Cities and towns

Cities and towns in Winston County

The radon figures on this page are for Winston County as a whole. They do not differ by city or town.

  • Louisville
  • Noxapater

2 incorporated places, as listed in the U.S. Census Bureau’s 2020 place reference files.

Winston County, Questions

Questions about radon in Winston County

Common questions8 questions, answered from the figures above

Are radon levels high in Winston County?

No CDC testing statistics are published here for Winston County, Mississippi yet. EPA places Winston County in Zone 3, lower predicted potential, a predicted average indoor screening level less than 2 pCi/L. 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.

What a radon level meansRadon in Mississippi

How do I get a radon test in Winston County?

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 Winston County as a service area yet. The Mississippi 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 stateMississippi radon program

Who does radon mitigation in Winston County?

Radon411 has no certified mitigators listed for Mississippi 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 Mississippi requires one.

How radon mitigation worksWhat mitigation costsMississippi radon program

What EPA radon zone is Winston County in?

EPA places Winston County, Mississippi in Zone 3, which EPA describes as lower predicted potential for the area. A zone is a prediction for the whole county and never determines whether a particular home should be tested. EPA recommends testing every home regardless of zone.

Should I test my home in Winston County?

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 Winston County?

Winston County borders 7 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 EPA zone on this page describes Winston County as a whole. It is a prediction for an area, and it does not measure your building.

  • 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.

    How to test a home
  • If you are buying

    Ask for past results and any system's post-mitigation test, and test during the sale.

    Buying a house: radon guide
  • If you are selling

    Testing before you list puts the timing in your hands; disclosure rules differ by state.

    Selling a house: radon guide
  • 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.

    Radon in rental homes

How long a test has to run, under what conditions, and what EPA says a result means: the testing standard, in full.

Winston County, Products

Testing and mitigation products

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

Winston County / Next steps

What to do next

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.