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Louisiana Radon Map and Levels by Parish

EPA puts all of Louisiana's classified parishes in Zone 3. Homes with elevated levels occur in all three zones, so only a test measures yours.

Data checked By Radon411Methodology

Predicted
64 of 64parishes in Zone 3, EPA's lowest predicted zone
Measured
By parishCDC publishes Louisiana's test figures by parish: 54 of 64 parishes have one.
Your home
Test to knowNo area figure here is a reading of your home.
How to test this homeFind a certified tester

The data

Louisiana, At a glance

Louisiana at a glance

Predicted: EPA radon zone

64 of 64 parishes classified

EPA classifies counties, not states. Of the 64 parishes in Louisiana with a zone, 64 are in Zone 3.

  • Zone 3: Lower predicted potentialless than 2 pCi/L64 of 64 parishes · 100.0%

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.

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

CDC test figures, parish by parish

CDC publishes Louisiana's radon test figures by parish: 54 of its 64 parishes have one. Each one's share is in the parish list.

Louisiana, Parishes

Louisiana parishes by EPA zone

Predicted

Louisiana's radon map, then all 64 parishes by the zone EPA predicts for each, highest reported share of tests at or above 4 pCi/L first. Each has its own report.

Louisiana radon map by parish: EPA radon zones. Map of Louisiana's 64 counties shaded by EPA radon zone: Zone 3 in pale sand. 0 in Zone 1, 0 in Zone 2, 64 in Zone 3.
Louisiana radon map by parishEPA radon zones for Louisiana's counties: 0 counties in Zone 1, 0 counties in Zone 2, 64 counties in Zone 3.Predicted potential for each county, not a reading of any home. Homes with elevated levels of radon have been found in all three zones.

Zone 3: lower predicted potential64

Local help

Louisiana, Local resources

Local resources in Louisiana

Who to ask in Louisiana: its radon program, test kits and professionals.

Radon Action Brief

National Radon Action MonthPre-sale

The radon brief for your Louisiana parish, 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 your Louisiana parish's BriefSee a free sample

Area data, not a test of the building.

What it means

Louisiana, Questions

Questions about radon in Louisiana

Common questions

8 questions, answered from the figures above

Is radon a problem in Louisiana?

EPA's Map of Radon Zones places 0 of the 64 Louisiana parishes it classifies in Zone 1, the highest predicted potential, 0 in Zone 2 and 64 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.

Louisiana on the radon mapRadon levels by state

How do I get a radon test in Louisiana?

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. The Louisiana radon program is the place to ask about certified testers and any test kit offer it runs.

How to test a homeFree and low-cost kits by stateLouisiana radon program

Who does radon mitigation in Louisiana?

Radon411 has no radon business listed for Louisiana 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 Louisiana

Which Louisiana counties have the highest radon?

64 of Louisiana's 64 parishes have an EPA radon zone published here. 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 Louisiana are high?

CDC has published no statewide radon testing statistics for Louisiana, 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 Louisiana in?

Louisiana is in EPA Region 6: South Central.

Do I need to test my home in Louisiana?

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 Louisiana?

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

The zone counts on this page describe counties across Louisiana. They are predictions for areas, and none of them measures your building.

Louisiana in figures

The figures above, said in words

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

    • Predicted

      Predicted

      EPA places 64 of Louisiana's 64 parishes in Zone 3.

      No Louisiana parish is in Zone 1.

    • Compared

      Calculated by Radon411

      0% of Louisiana's parishes with a zone on file are in Zone 1, a smaller share than across all U.S. counties (34%). It is a share of counties, not of land, people or homes.

  • Reported tests

    Measured

    CDC has no statewide testing figure for Louisiana on file here.

    54 of the 64 parishes have a published county figure; the most tests in each one's latest year were reported for Ascension Parish (522 tests in 2021), Caddo Parish (486 tests in 2022) and East Baton Rouge Parish (447 tests in 2022).

Louisiana's radon program and its page are under Local resources.

Products

Louisiana, Products

Testing and mitigation products

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

Test kits and monitors42

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Best radon monitors for Louisiana homes, compared

Testing

5

Mitigation

3

Explore

Louisiana, 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.