Locations and reports
Radon Levels in Union County, Mississippi
What this means for you
- Your area: EPA rates Union County Zone 2, the middle 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 Union 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 Union County, Mississippi in Zone 2, moderate 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 2: moderate predicted potential
EPA predicts an average indoor of 2 to 4 pCi/L (75 to 150 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: Moderate across 53% 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 Union County. Only a test tells you the level in a home.
Union County, In figures
Union County in figures
What the published data says about Union County, in words. A zone and a share of tests describe an area, never the level in any one home.
Predicted
PredictedEPA places Union County in Zone 2, moderate predicted potential, as it does 7 other counties of Mississippi's 82.
Of the 7 bordering counties, EPA places Lee County and Pontotoc County in Zone 2 and Benton County, Lafayette County, Marshall County, Prentiss County and Tippah County in Zone 3.
Reported tests
MeasuredCDC has no annual testing figure for Union 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 New Albany, Sherman and Myrtle; the figures here cover them as part of the county.
Union County, Bordering counties
Counties bordering Union County
Calculated by Radon4117 counties share a boundary with Union County, 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.
- Pontotoc CountyMSZone 2: Moderate predicted potential
- Benton CountyMSZone 3: Lower predicted potential
- Tippah CountyMSZone 3: Lower predicted potential
- Lee CountyMSZone 2: Moderate predicted potential
- Lafayette CountyMSZone 3: Lower predicted potential
- Prentiss CountyMSZone 3: Lower predicted potential
- Marshall CountyMSZone 3: Lower predicted potential
Union 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
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 directoryUnion County, Cities and towns
Cities and towns in Union County
The radon figures on this page are for Union County as a whole. They do not differ by city or town.
- New Albany
- Sherman (part)
- Myrtle
- Blue Springs
4 incorporated places, as listed in the U.S. Census Bureau’s 2020 place reference files. “(part)” marks a place that extends into another county.
Union County, Questions
Questions about radon in Union County
Common questions8 questions, answered from the figures above
Are radon levels high in Union County?
No CDC testing statistics are published here for Union County, Mississippi yet. EPA places Union County in Zone 2, moderate predicted potential, a predicted average indoor screening level 2 to 4 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.
How do I get a radon test in Union 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 Union 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 Union 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 Union County in?
EPA places Union County, Mississippi in Zone 2, which EPA describes as moderate 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 Union 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 Union County?
Union 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 Union County as a whole. It is a prediction for an area, and it does not measure your building.
- 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.
Union County, Products
Testing and mitigation products
Whatever the figures for Union County 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.
Union County / 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.