Saint George, SC Radon Mitigation and Testing

Q: What EPA Radon Zone is Saint George in?

Saint George is in Dorchester County, EPA Zone 3.

Q: How much does radon mitigation cost in Saint George?

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

Dorchester County

EPA Zone 3

Saint George in Dorchester County serves the Charleston metro area, where Coastal Plain sediments and sandy soils typically result in lower radon concentrations. Current testing data for zip code 29477 is unavailable, though South Carolina's coastal geology generally produces radon levels below EPA action thresholds. Residents should still consider testing, particularly in newer construction that may have enclosed crawl spaces or basement areas.

Saint George, SC Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

Saint George, SC Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Saint George Radon Facts

Key details about the radon risk profile for Saint George and the 29477 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Dorchester County, SC

Zip Code

29477

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Saint George and the 29477 zip code are located in Dorchester County, which has an EPA assigned Radon Zone of 3. A radon zone of 3 predicts an average indoor radon screening level less than 2 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Saint George, SC

What EPA Radon Zone is Saint George in?

Saint George and the 29477 zip code are in Dorchester 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.

How much does radon mitigation cost in Saint George?

Radon mitigation in Saint George 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 George?

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.

Most Active Radon Markets in South Carolina

Cities with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Fort Mill	6.00 pCi/L	1
Greenville	5.00 pCi/L	1