Norcross, GA Radon Levels

Q: What EPA Radon Zone is Norcross in?

Norcross is in Gwinnett County, EPA Zone 1.

Q: How much does radon mitigation cost in Norcross?

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

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

Norcross, GA Radon Facts

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

County Gwinnett County, GA

Zip Code 30071

Located in Gwinnett County within the Atlanta Metro's northeastern suburbs, Norcross spans multiple zip codes (30071, 30092, 30093) across Georgia's Piedmont region. The area's crystalline bedrock and clay soils generally produce moderate radon potential, though specific testing data is currently limited. Homeowners in this diverse community of ranch-style homes and newer developments should test to establish baseline radon levels.

8.80

pCi/L area average

Above EPA Action Level

Gwinnett County average: 8.80 pCi/L, based on 15 user-submitted tests across 8 cities in the county. No homeowner readings have been submitted for Norcross 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+

Norcross, 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 Norcross, GA

No homeowner tests have been submitted for Norcross 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
Duluth	5.5 mi	5.00 pCi/L	1
Lilburn	8.9 mi	7.50 pCi/L	2
Alpharetta	10.1 mi	6.00 pCi/L	1
Stone Mountain	10.5 mi	6.00 pCi/L	2
Roswell	10.6 mi	4.00 pCi/L	1
Lawrenceville	11.1 mi	4.67 pCi/L	3
Avondale Estates	12.0 mi	10.00 pCi/L	1
Suwanee	12.3 mi	6.00 pCi/L	1

Gwinnett County Radon Profile

The bedrock and soils beneath Gwinnett County are classified by the EPA as Radon Zone 1, the highest-risk tier, with predicted average indoor screening levels above 4 pCi/L. Homeowner-submitted tests from 8 cities in Gwinnett County average 8.80 pCi/L across 15 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Radon is the second leading cause of lung cancer in the United States, and a short-term test is the only way to confirm a specific home's level in Gwinnett County.

Radon FAQ for Norcross, GA

What EPA Radon Zone is Norcross in?

Norcross and the 30071 zip code are in Gwinnett 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 Norcross?

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

Radon mitigation in Norcross 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 Norcross?

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.