Skip to content
$5

County radon report

Get it

Locations and reports

Radon Levels in Catahoula Parish, Louisiana

Zone 3Lower predicted potential740 square miles · 6 bordering counties

What this means for you

  • Your area: EPA rates Catahoula Parish 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: Of 63 radon tests reported to CDC for Catahoula Parish (2021), 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 2021, 0.0% of the radon tests reported to CDC for Catahoula Parish, Louisiana came back at or above the EPA action level of 4 pCi/L, and the median result was 0.2 pCi/L. EPA's Map of Radon Zones places the county in Zone 3, lower predicted potential. 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

Radon tests reported for Catahoula Parish, 2021

Tests reported
63
At or above 4 pCi/L
0.0%
Median result
0.2 pCi/L
Reported results by concentration band, Catahoula Parish, 2021
Under 2 pCi/L: 100%2 to 4 pCi/L: 0%4 pCi/L and above: 0%

Of 63 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.

Reported results by concentration band, Catahoula Parish, 2021: data table
Result bandTests Calculated by Radon411Share Measured
Under 2 pCi/L63100.0%
2 to 4 pCi/L00.0%
4 pCi/L and above00.0%

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: 2021.

Catahoula Parish, In figures

Catahoula Parish in figures

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

    • Predicted

      Predicted

      EPA places Catahoula Parish in Zone 3, lower predicted potential, as it does 63 other counties of Louisiana's 64.

      Of the 6 bordering counties, EPA places Avoyelles Parish, Caldwell Parish, Concordia Parish, Franklin Parish, LaSalle Parish and Tensas Parish in Zone 3.

  • Reported tests

    Measured

    CDC has one annual figure for Catahoula Parish on file here, for 2021: 0.0% of 63 reported tests were at or above 4 pCi/L.

  • Local record

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

    The county's largest incorporated places are Jonesville, Sicily Island and Harrisonburg; the figures here cover them as part of the county.

Catahoula Parish, Comparison

How Catahoula Parish compares

Measured

Catahoula Parish'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

Measured

2021, highest first. Each county’s own published CDC figure.

  1. Avoyelles ParishLA216 tests0.0%
  2. Caldwell ParishLA3 tests0.0%
  3. Catahoula ParishThis page63 tests0.0%

Median reported result

Measured

2021, highest first. Each county’s own published CDC figure.

  1. Caldwell ParishLA3 tests1.0 pCi/L
  2. Avoyelles ParishLA216 tests0.2 pCi/L
  3. Catahoula ParishThis page63 tests0.2 pCi/L

Each figure is that county’s own published CDC figure for 2021, counting radon tests reported to CDC, not homes. Catahoula Parish 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. No published CDC figure for 2021: LaSalle Parish, LA; Concordia Parish, LA; Franklin Parish, LA; Tensas Parish, LA. Every Louisiana county’s own figure is in the Louisiana county table.

CDC publishes this figure only for counties here, so there is no state or national number to compare Catahoula Parish, Louisiana with.

Catahoula Parish, Bordering counties

Counties bordering Catahoula Parish

Calculated by Radon411

6 counties share a boundary with Catahoula Parish, 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.

Catahoula Parish, Local resources

Local resources in Louisiana

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

Louisiana's radon program

Louisiana Department of Environmental Quality

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

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

1 professional is listed in Louisiana.

Professionals in Louisiana

Catahoula Parish, Cities and towns

Cities and towns in Catahoula Parish

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

  • Jonesville
  • Sicily Island
  • Harrisonburg

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

Catahoula Parish, Questions

Questions about radon in Catahoula Parish

Common questions8 questions, answered from the figures above

Are radon levels high in Catahoula Parish?

In 2021, 0.0% of the radon tests reported to CDC for Catahoula Parish, Louisiana 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. EPA places Catahoula Parish 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 Louisiana

How do I get a radon test in Catahoula Parish?

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 Catahoula Parish as a service area yet. The Louisiana 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 stateLouisiana radon program

Who does radon mitigation in Catahoula Parish?

No listed mitigator names Catahoula Parish as a service area yet; the Louisiana directory lists 1 company. 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 Louisiana requires one.

How radon mitigation worksWhat mitigation costsMitigators in Louisiana

What EPA radon zone is Catahoula Parish in?

EPA places Catahoula Parish, Louisiana 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 Catahoula Parish?

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 Catahoula Parish?

Catahoula Parish borders 6 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 Catahoula Parish, Louisiana in 2021. They describe tests other people carried out in other buildings, and none of them measures yours.

  • 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.

Catahoula Parish, Products

Testing and mitigation products

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

Catahoula Parish / 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.