Mount Washington, KY Radon Levels

Q: What EPA Radon Zone is Mount Washington in?

Mount Washington is in Bullitt County, EPA Zone 1.

Q: How much does radon mitigation cost in Mount Washington?

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

Check local Mount Washington radon levels and find certified testing and mitigation professionals to keep your home safe

Mount Washington, KY Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)

County Bullitt County, KY

Zip Code 40047

Suburban Bullitt County community Mount Washington sits south of Louisville, where limestone bedrock and karst geology create moderate radon conditions typical of the Louisville Metro area. While specific testing data for zip code 40047 is limited, the area's mix of newer subdivision homes and older properties on limestone foundations warrants regular radon monitoring. Homeowners should test, as Kentucky's geological conditions can produce unexpected radon hot spots.

20.00

pCi/L area average

Above EPA Action Level

Bullitt County average: 20.00 pCi/L, based on 1 user-submitted test across 1 city in the county. No homeowner readings have been submitted for Mount Washington itself yet, so this county figure is the closest available benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Mount Washington, 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 Mount Washington, KY

No homeowner tests have been submitted for Mount Washington 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
Shepherdsville	7.6 mi	20.00 pCi/L	1
Taylorsville	9.6 mi	6.00 pCi/L	1
Louisville	13.5 mi	5.50 pCi/L	2
Bardstown	17.2 mi	12.67 pCi/L	3
Crestwood	20.6 mi	5.00 pCi/L	1
Goshen	25.3 mi	10.00 pCi/L	1
Vine Grove	27.6 mi	20.00 pCi/L	1
Elizabethtown	30.4 mi	18.33 pCi/L	3

Bullitt County Radon Profile

Because of its underlying geology, Bullitt County is mapped as EPA Radon Zone 1 — the most elevated classification — where predicted indoor screening averages exceed 4 pCi/L. Homeowner-submitted tests from 1 city in Bullitt County average 20.00 pCi/L across 1 test — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. As the second leading cause of lung cancer in the U.S., radon warrants testing in every Bullitt County home regardless of zone or a neighbor's results.

Radon FAQ for Mount Washington, KY

What EPA Radon Zone is Mount Washington in?

Mount Washington and the 40047 zip code are in Bullitt County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.

Why are radon readings shown from areas near Mount Washington?

No homeowner radon tests have been submitted for Mount Washington yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the Bullitt County average—are the best available indicator of local conditions until Mount Washington 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 Mount Washington?

Radon mitigation in Mount Washington 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 Mount Washington?

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.