Nolensville, TN Radon Levels

Q: What EPA Radon Zone is Nolensville in?

Nolensville is in Williamson County, EPA Zone 1.

Q: How much does radon mitigation cost in Nolensville?

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

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

Nolensville, TN Radon Facts

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

County Williamson County, TN

Zip Code 37135

Radon testing information for Nolensville in Williamson County remains limited, highlighting the importance of individual home assessment in this rapidly growing Nashville metro suburb. The community's newer residential developments, built over central Tennessee's limestone bedrock and residual clay soils, can experience variable radon conditions despite the area's generally moderate potential. Homeowners in zip code 37135 should prioritize testing, particularly important given Tennessee's EPA Zone 1 classification and the area's continued residential expansion.

6.25

pCi/L area average

Above EPA Action Level

Williamson County average: 6.25 pCi/L, based on 4 user-submitted tests across 3 cities in the county. No homeowner readings have been submitted for Nolensville 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+

Nolensville, TN 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 Nolensville, TN

No homeowner tests have been submitted for Nolensville 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
Brentwood	8.0 mi	8.50 pCi/L	2
Franklin	9.5 mi	5.00 pCi/L	1
Smyrna	10.2 mi	7.00 pCi/L	1
College Grove	10.9 mi	3.00 pCi/L	1
Nashville	16.0 mi	7.00 pCi/L	1
Hermitage	18.2 mi	4.00 pCi/L	1
Mount Juliet	20.5 mi	2.00 pCi/L	1
Old Hickory	21.8 mi	12.00 pCi/L	1

Williamson County Radon Profile

Because of its underlying geology, Williamson 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 3 cities in Williamson County average 6.25 pCi/L across 4 tests — 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 Williamson County home regardless of zone or a neighbor's results.

Radon FAQ for Nolensville, TN

What EPA Radon Zone is Nolensville in?

Nolensville and the 37135 zip code are in Williamson 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 Nolensville?

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

Radon mitigation in Nolensville 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 Nolensville?

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.