Fort Knox, KY Radon Levels

Q: What EPA Radon Zone is Fort Knox in?

Fort Knox is in Hardin County, EPA Zone 2.

Q: How much does radon mitigation cost in Fort Knox?

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

Check local Fort Knox radon levels and find certified testing and mitigation professionals to keep your home safe

Fort Knox, KY Radon Facts

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

County Hardin County, KY

Zip Code 40121

Positioned in Hardin County within the Louisville Metro area, Fort Knox sits atop the Muldraugh Escarpment where limestone bedrock can contribute to moderate radon levels across the military installation and surrounding residential areas. Testing data for zip codes 40121 and 40122 remains limited, making individual property assessment important for military families and civilian residents. Both historic military housing and newer residential developments should undergo radon testing, particularly homes with basement foundations typical of central Kentucky construction.

15.50

pCi/L area average

Above EPA Action Level

Hardin County average: 15.50 pCi/L, based on 4 user-submitted tests across 2 cities in the county. No homeowner readings have been submitted for Fort Knox 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+

Fort Knox, 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 Fort Knox, KY

No homeowner tests have been submitted for Fort Knox 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
Vine Grove	3.6 mi	20.00 pCi/L	1
Brandenburg	9.8 mi	11.50 pCi/L	2
Elizabethtown	14.9 mi	18.33 pCi/L	3
Shepherdsville	16.5 mi	20.00 pCi/L	1
Glendale	20.2 mi	7.00 pCi/L	1
Louisville	26.2 mi	5.50 pCi/L	2
Bardstown	27.6 mi	12.67 pCi/L	3
Taylorsville	33.0 mi	6.00 pCi/L	1

Hardin County Radon Profile

The soils and bedrock of Hardin County place it in EPA Radon Zone 2, a moderate-risk classification with predicted indoor averages of 2 to 4 pCi/L. Homeowner-submitted tests from 2 cities in Hardin County average 15.50 pCi/L across 4 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Since radon is the second leading cause of lung cancer nationally, the EPA urges every household in Hardin County to test, as levels can differ between neighboring homes.

Radon FAQ for Fort Knox, KY

What EPA Radon Zone is Fort Knox in?

Fort Knox and the 40121 zip code are in Hardin 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 Fort Knox?

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

Radon mitigation in Fort Knox 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 Fort Knox?

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.