Austell, GA Radon Levels

Q: What EPA Radon Zone is Austell in?

Austell is in Cobb County, EPA Zone 1.

Q: How much does radon mitigation cost in Austell?

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

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

Austell, GA Radon Facts

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

County Cobb County, GA

Zip Code 30106

Found in Cobb County within the Atlanta Metro area, Austell sits on Georgia's Piedmont plateau where crystalline bedrock can produce variable radon levels. Testing data for zip codes 30106 and 30168 is currently limited, though the area's mix of older ranch-style homes and newer construction presents diverse foundation types. Homeowners should consider radon testing, as Georgia's granite-based geology can create localized high-radon pockets even in generally lower-risk areas.

4.80

pCi/L area average

Above EPA Action Level

Cobb County average: 4.80 pCi/L, based on 5 user-submitted tests across 3 cities in the county. No homeowner readings have been submitted for Austell 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+

Austell, GA 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 Austell, GA

No homeowner tests have been submitted for Austell 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
Mableton	1.7 mi	4.67 pCi/L	3
Powder Springs	8.3 mi	6.00 pCi/L	1
Marietta	11.4 mi	4.00 pCi/L	1
Atlanta	12.9 mi	8.80 pCi/L	5
Dallas	15.0 mi	7.33 pCi/L	3
Forest Park	19.4 mi	10.00 pCi/L	1
Avondale Estates	20.4 mi	10.00 pCi/L	1
Decatur	20.7 mi	9.00 pCi/L	1

Cobb County Radon Profile

Cobb County falls in EPA Radon Zone 1, meaning the local uranium-bearing geology is predicted to drive average indoor radon screening levels above the EPA's 4 pCi/L action threshold. Homeowner-submitted tests from 3 cities in Cobb County average 4.80 pCi/L across 5 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 Cobb County to test, as levels can differ between neighboring homes.

Radon FAQ for Austell, GA

What EPA Radon Zone is Austell in?

Austell and the 30106 zip code are in Cobb 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 Austell?

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

Radon mitigation in Austell 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 Austell?

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.