Union Star, KY Radon Levels

Q: What EPA Radon Zone is Union Star in?

Union Star is in Breckinridge County, EPA Zone 2.

Q: How much does radon mitigation cost in Union Star?

Radon mitigation typically costs between $800 and $2,000. Most standard systems fall in the $1,000-$1,500 range.

Check local Union Star radon levels and find certified testing and mitigation professionals to keep your home safe

Union Star, KY Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)

County Breckinridge County, KY

Zip Code 40171

Located in Breckinridge County within the Louisville Metro area, Union Star sits atop Kentucky's limestone bedrock and residual clay soils that can create pathways for radon gas migration. Testing data for zip code 40171 remains sparse, highlighting the importance of professional radon testing for homeowners in this rural community. The area's predominantly older housing stock, including farmhouses with partial basements and newer homes with full basements, each requires individual assessment for radon accumulation.

12.07

pCi/L area average

Above EPA Action Level

Nearby homeowner readings average 12.07 pCi/L, based on 14 tests from 9 nearby cities. No readings have been submitted for Union Star yet, so the closest recorded data is shown as a benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Union Star, KY Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

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Radon Readings Near Union Star, KY

No homeowner tests have been submitted for Union Star yet. The closest cities with user-submitted radon data are shown below — explore them to gauge local conditions. Radon varies by home, so testing is the only way to know your level.

City	Distance	Avg User Level	Readings
Brandenburg	19.2 mi	11.50 pCi/L	2
Vine Grove	25.8 mi	20.00 pCi/L	1
Whitesville	29.4 mi	17.00 pCi/L	1
Elizabethtown	37.1 mi	18.33 pCi/L	3
Owensboro	38.6 mi	5.00 pCi/L	2
Glendale	39.7 mi	7.00 pCi/L	1
Utica	40.2 mi	6.00 pCi/L	1
Shepherdsville	42.2 mi	20.00 pCi/L	1

Breckinridge County Radon Profile

EPA mapping assigns Breckinridge County to Radon Zone 2, indicating moderate predicted indoor screening levels in the 2 to 4 pCi/L range based on regional geology. Direct test data for Breckinridge County remains limited, so the closest neighboring readings are used here to represent the radon conditions homeowners are likely to encounter. As the second leading cause of lung cancer in the U.S., radon warrants testing in every Breckinridge County home regardless of zone or a neighbor's results.

Radon FAQ for Union Star, KY

What EPA Radon Zone is Union Star in?

Union Star and the 40171 zip code are in Breckinridge County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.

Why are radon readings shown from areas near Union Star?

No homeowner radon tests have been submitted for Union Star yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the Breckinridge County average—are the best available indicator of local conditions until Union Star homeowners submit their own results. The EPA still recommends testing every individual home, since levels can vary significantly from house to house.

How much does radon mitigation cost in Union Star?

Radon mitigation in Union Star typically costs between $800 and $2,000. Most homes with standard basements can be mitigated with a sub-slab depressurization system in the $1,000–$1,500 range. Factors that can increase cost include complex foundations, crawl spaces, or very high radon levels.

Should I test for radon if I'm buying a home in Union Star?

Yes. Radon testing should be part of every home purchase. A short-term radon test is typically included as part of the home inspection process and costs $150–$250. If elevated levels are found, you can negotiate mitigation as part of the sale.