Radon Levels & Zone Map in Noxubee County, MS
Direct Answer for basement and lowest-level tests: Noxubee County sits in the gray zone. The map helps, but your own reading matters more than the countywide signal.
Treat the map as a hint, not the answer
Zone 2 is the gray area. A real reading is what decides whether you retest, track, or price mitigation.
Gray-zone county signal. Some homes stay low, others cross the EPA line.
2.0-3.9 pCi/L usually means retest or track. 4.0+ is where EPA action and quote planning start to matter.
No reading: test first. Borderline results often need retest or long-term tracking.
Official County Evidence
Noxubee County evidence before the next step
Noxubee County, MS has enough EPA zone, Census housing, and state-source context to explain what to do before a home reading exists.
Source window
Current source summary
County evidence type
Official source follow-up
County context only; your home test controls the decision.
Primary result
Not available
n/a in-state
4.0+ signal
Not available
n/a in-state
High-end signal
Not available
n/a in-state
Official evidence dossier
Source record for Noxubee County, MS
This page is held on EPA zone, Census housing context, and an identified source path, not a normalized county measurement row.
Primary public source
Map and source context
Measurement window
Current source summary
Retrieved / checked
See source
County FIPS
28103
Evidence stack
County source
Map and source context
Primary source used for the county evidence row.
Federal map
EPA Map of Radon Zones
Zone 2 is context, not a property result.
Housing context
US Census ACS housing context
47.0% built before 1980; 4,745 housing units.
State follow-up
State radon program
Use the state source before hiring or interpreting local rules.
Primary field
Not available
Median field
Not available
4.0+ field
Not available
Sample / volume
Not available
Metric shape
No county measurement distribution is shown yet, so the page should explain testing decisions without ranking the county by pCi/L.
Source limitation
This county context cannot diagnose a specific property. Use it to choose the right test and official follow-up path.
Property-level limit
Not a property-level diagnosis. The county record explains local evidence; your home's own test result controls the next decision.
County-specific interpretation
Noxubee County, MS has source context, but the home test still controls the decision.
EPA Zone 2 is a moderate county signal; direct testing matters more than the map label. The practical decision is still home-specific: get a first result before comparing mitigation prices or negotiating credits.
Real-estate use
Buyer or seller use: do not negotiate from the county map alone. Ask for a fresh lowest-level test, then use a 4.0+ result as the trigger for quotes or credits.
EPA Zone 2 is a moderate county signal; direct testing matters more than the map label. Use a home test result before deciding whether mitigation cost or seller-credit planning matters.
Use This EvidenceOfficial state path
Open the state radon program
Use state rules and local program contacts before choosing a contractor.
EPA hiring guidance
Find a qualified radon provider
EPA points homeowners to state programs and national proficiency listings.
Certified professional search
Search NRPP-certified pros
Use this after you have a valid result or need professional testing.
Testing answer
Should homeowners in Noxubee County still test for radon?
Yes. This county has useful map, housing, and source context, but the missing county measurement table means a direct home test carries the decision.
Enter the result. Pick the deal side. Get the route.
Gray-zone county signal. Some homes stay low, others cross the EPA line.
County signal
Not available
At or above 4.0
Not available
Decision side
Foundation clue
Choose your next step
Start from the exact job, not another generic radon article.
Pick the situation that matches Noxubee County, MS. Each route keeps the reading, deal side, or foundation clue attached so the next page answers the search instead of resetting the user.
Failed inspection
I need a repair or seller credit number
Open the local credit path with a 4.0+ buyer scenario already selected.
Open negotiation route4.0+ pCi/L
I have a high result and need the cost path
Go straight to the county estimate, quote context, and contractor checklist.
Open cost route2.0-3.9 pCi/L
I need to know if this number is bad
Use the level explanation first, then decide whether to retest, monitor, or price mitigation.
Open level routeNo test yet
I need the first valid result
Start with kit placement, timing, closed-house conditions, and result interpretation.
Open testing routePick the situation that matches you
You should not need to read the whole guide before clicking one of these. Start with the lane that matches your current stage, then come back for the deeper reference only if you still need it.
Jump into a prefilled Noxubee County action plan based on the result you already have, instead of starting from a generic cost page.
I have not tested yet
Do not price mitigation blind. Get the first number, then decide whether you need monitoring, quotes, or nothing at all.
My result is 2.0-3.9
Usually confirm the reading first. If it keeps showing up, use the county evidence and official guidance before deciding whether pricing makes sense.
My result is 4.0+
This is the EPA action line. Use the local cost page before calling contractors so you know the likely scope, timing, and budget.
I am buying or selling
Turn the reading into a credit or repair number before negotiation starts. This is the faster path than arguing from a generic article.
Already tested once and need the cleanest follow-up path?
Review retesting stepsCounty Evidence Snapshot
Noxubee County testing context
Noxubee County is a moderate-signal county: the EPA map is useful context, but the local evidence, housing profile, and your own home test decide the next step.
EPA map signal
Zone 2
County-level predicted indoor screening range, not a home-level test result.
Housing base
4,745
16th percentile among 82 MS counties with data.
Older housing share
47.0%
20th percentile in-state; older homes often need clearer test placement decisions.
Median home value
$85,000
Used as context for whether mitigation is a small maintenance item or a negotiation issue.
County evidence interpretation
Official source follow-up
Primary result rank
n/a
Not available
4.0+ rank
n/a
Not available at or above 4.0
High-end rank
n/a
Not available
Test volume rank
n/a
Not available
How to use this county data
Data source
Map and source context
This page is held on EPA zone, Census housing context, and an identified source path, not a normalized county measurement row.
What the numbers show
No county readings yet
No county measurement distribution is shown yet, so the page should explain testing decisions without ranking the county by pCi/L.
Nearby comparison
Nearby comparison is unavailable until comparable county measurement numbers are available.
How this helps
Use this to decide whether a first home test still makes sense before mitigation pricing or credit planning.
What the data says
Noxubee County, MS is not being treated as a data-free page; it is held on EPA zone, Census housing context, and a state-source follow-up path.
No state percentile is shown until an official county measurement table is ingested.
What to do with it
EPA Zone 2 is a moderate county signal; direct testing matters more than the map label. Use a home test result before deciding whether mitigation cost or seller-credit planning matters.
Retest trigger: a 2.0-3.9 pCi/L result should be confirmed because the page has source context but not a normalized local measurement distribution yet.
Official state source context is identified, but county-level measurement metrics are not normalized yet.
No reading yet
Run a first radon test before using the county map to make a decision.
2.0-3.9 result
A 2.0-3.9 pCi/L result should be retested or tracked because county source coverage is not enough to dismiss it.
4.0+ result
A 4.0+ pCi/L result should move straight into mitigation pricing or real-estate credit planning.
Measurement gap: an official state source is identified, but normalized county metrics are not available yet.
Direct Answer
What radon risk level should homeowners assume in Noxubee County?
Noxubee County is currently categorized as EPA Zone 2 (Moderate Risk). Test all lived-in levels and confirm with follow-up testing if elevated.
| Evidence | Value |
|---|---|
| Area | Noxubee County, MS |
| EPA Zone | Zone 2 |
| Primary Recommendation | Perform direct radon testing in the lowest livable level |
Your Radon Reading
Enter your home's measured level; the starting value is only a planning example until you have your own result.
Elevated - Consider Action
Your reading is below the US EPA action level (4.0 pCi/L), but this range still warrants follow-up testing. The World Health Organization uses 2.7 pCi/L as a tighter reference point.
If this was just a one-time snapshot, confirm it with another test or with longer tracking. If this level persists, planning mitigation is reasonable, especially for homes with frequent basement use, children, or pending real-estate transactions. Scroll down to see your estimated cost.
Understanding Radon Levels: Complete Reference
Below 2.0 pCi/L - Lower Concern, Keep Testing
Below both the EPA (4.0) and WHO (2.7) action reference levels. This usually means mitigation is not the next immediate step after a confirmed result. The average outdoor radon level is approximately 0.4 pCi/L, and there is no known risk-free indoor level. Periodic testing is still recommended because levels can change over time due to seasonal variations, changes in home ventilation, or foundation settling.
-4.0
2.0 - 4.0 pCi/L - Elevated, Consider Action
Exceeds the World Health Organization's reference level of 2.7 pCi/L but falls below the US EPA action threshold. The EPA states that homeowners should "consider fixing" homes in this range, especially if the home has a basement used as living space, if children are present, or in connection with a real estate transaction. Practical next step: run a confirmatory long-term test, then compare mitigation quotes if levels remain elevated.
-8.0
4.0 - 8.0 pCi/L - Action Recommended
Exceeds the EPA action level of 4.0 pCi/L. The EPA and Surgeon General strongly recommend mitigation within a few months. At this level, prioritize confirmatory testing and contractor planning. Standard sub-slab depressurization systems typically reduce indoor levels by 80-99%.
Above 8.0 pCi/L - Urgent Action Required
At these levels, the EPA recommends expedited mitigation - ideally within weeks, not months. Occupants should minimize time in lower-level rooms until the system is installed. Use a certified mitigator and request priority scheduling to shorten high-exposure time. Many mitigators offer priority scheduling for homes above 8.0 pCi/L.
Why Radon is Worth Monitoring in Noxubee County
Noxubee County falls in EPA Zone 2, where the predicted indoor screening range is between 2.0 and 4.0 pCi/L. Even when the countywide map signal sits below the EPA action level, geological variability means that some individual homes will still test above 4.0 pCi/L.
The soil composition in this area typically includes a mix of sedimentary formations that can contain moderate uranium deposits. Homes with basement or crawlspace foundations are particularly susceptible, as they provide more pathways for soil gas entry.
The World Health Organization recommends action at 2.7 pCi/L - well below the US EPA threshold. If you have children, spend significant time in below-grade rooms, or are buying/selling a home, testing is essential even in a Zone 2 area.
Radon & Health: What the Science Says
lung cancer
from radon
4.0 pCi/L
Radon is a Class A carcinogen - the same classification as asbestos and tobacco smoke. The National Academy of Sciences estimates that radon causes approximately 21,000 lung cancer deaths annually in the United States, making it the leading environmental cause of cancer death.
Unlike smoking, radon exposure is involuntary and often invisible. There is no safe level of radon - risk increases linearly with exposure. The good news: radon mitigation systems are highly effective, typically reducing indoor levels by 80-99% within hours of activation.
Source: US Environmental Protection Agency, "A Citizen's Guide to Radon" (EPA 402/K-12/002). National Academy of Sciences, Biological Effects of Ionizing Radiation (BEIR VI) Report, 1999.
Step 1: Test Your Home
Testing is the only way to know your home's radon level. Zone and county data tell you the regional signal, but your home could be significantly higher or lower than the countywide pattern. Start with a valid test setup before using any cost path.
State radon programs and EPA provider guidance are the right reference before hiring or confirming local requirements.
Open the state radon programAlready Know Your Level?
If your test shows 4.0 pCi/L or higher, get an itemized cost estimate specific to Noxubee County - including regional labor rates and permit requirements.
Get Mitigation Cost Estimate ->MS Radon Regulations
Mississippi does not have specific radon disclosure requirements in real estate transactions.
Mississippi does not require state licensing for radon professionals.
How to Test for Radon in Noxubee County
Buy a Test Kit
Purchase a short-term charcoal test kit online or from a local hardware store. Cost: $15-$30. Place it in the lowest livable level of your home.
Wait 2-7 Days
Keep doors and windows closed (except normal entry/exit) during the test period. Avoid running whole-house fans. Mail the kit to the lab provided.
Read Your Results
If results are below 4.0 pCi/L, re-test every 2 years or use a monitor for ongoing tracking. If above 4.0, use our cost calculator to see mitigation options.
Related Radon Resources for Noxubee County
Explore Other MS Counties
Official State Resource
Mississippi radon program and rules
Use the state program link to verify local radon guidance, disclosure language, and contractor credential expectations before you act on an estimate.
Disclosure note
Mississippi does not have specific radon disclosure requirements in real estate transactions.
Credential note
Mississippi does not require state licensing for radon professionals.
Sources & Methodology
Radon zone classifications for Noxubee County are sourced from the EPA's Map of Radon Zones, which uses geological surveys, indoor radon measurements, and soil permeability data to assign each county a risk tier.
Disclaimer: Zone data represents county-level screening ranges and cannot predict the radon level in any specific home. Testing is the only reliable method to determine your home's radon concentration. This content is for informational purposes and is not medical advice.
Content review: Source-level retrieval dates
Editorial and Data Transparency
- Author
- RadonVerdict Data Team (Public Data and Cost Modeling)
- Content Review
- Source-level dates shown below
- Data Retrieved At
- 2026-02-24
Primary Sources
- EPA Map of Radon Zones (retrieved 2026-02-21)
- EPA A Citizen's Guide to Radon (retrieved 2026-05-05)
- CDC Environmental Public Health Tracking - Radon Testing (retrieved 2026-05-05)
- Official MS radon program
- US Census Bureau, 2018-2022 American Community Survey 5-Year Estimates (retrieved 2026-02-24)