Saint Simons Island, GA Radon Levels

Q: What EPA Radon Zone is Saint Simons Island in?

Saint Simons Island is in Glynn County, EPA Zone 3.

Q: Why are radon readings shown from areas near Saint Simons Island?

No homeowner radon tests have been submitted for Saint Simons Island yet, so readings from the closest cities and the Glynn County average are used as the best available indicator of local conditions. The EPA recommends testing every individual home.

Q: How much does radon mitigation cost in Saint Simons Island?

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

Check local Saint Simons Island radon levels and find certified testing and mitigation professionals to keep your home safe

Saint Simons Island, GA Radon Facts

EPA Radon Zone Zone 3 — Low Risk < 2.0 pCi/L (Zone 3)

County Glynn County, GA

Zip Code 31522

Saint Simons Island in Glynn County sits on Georgia's Atlantic coast, where sandy barrier island soils and saltwater intrusion generally create conditions less favorable for radon accumulation. The island's housing includes historic coastal homes, modern oceanfront construction, and inland developments, most built on elevated foundations or slabs due to flood requirements. Current testing data remains limited, making individual radon assessment valuable for residents to understand their property's specific conditions.

5.00

pCi/L area average

Above EPA Action Level

Nearby homeowner readings average 5.00 pCi/L, based on 1 test from 1 nearby city. No readings have been submitted for Saint Simons Island yet, so the closest recorded data is shown as a benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Saint Simons Island, 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 Saint Simons Island, GA

No homeowner tests have been submitted for Saint Simons Island 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
Richmond Hill	46.1 mi	5.00 pCi/L	1

Glynn County Radon Profile

The EPA maps Glynn County as Radon Zone 3, the lowest predicted classification, with modeled indoor screening levels under 2 pCi/L. Direct test data for Glynn County remains limited, so the closest neighboring readings are used here to represent the radon conditions homeowners are likely to encounter. As the second leading cause of lung cancer in the U.S., radon warrants testing in every Glynn County home regardless of zone or a neighbor's results.

Radon FAQ for Saint Simons Island, GA

What EPA Radon Zone is Saint Simons Island in?

Saint Simons Island and the 31522 zip code are in Glynn County, which has an EPA assigned Radon Zone of 3. A zone of 3 predicts an average indoor radon screening level less than 2 pCi/L.

Why are radon readings shown from areas near Saint Simons Island?

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

Radon mitigation in Saint Simons Island 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 Saint Simons Island?

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.