Edisto Island, SC Radon Mitigation and Testing

Q: What EPA Radon Zone is Edisto Island in?

Edisto Island is in Charleston County, EPA Zone 3.

Q: How much does radon mitigation cost in Edisto Island?

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

Charleston County

EPA Zone 3

This unique barrier island community in Charleston County sits within the Charleston Metro area's 29438 zip code, where coastal geology typically produces lower radon levels. Located in EPA Zone 3, the island's sandy soils and sea-level position generally reduce radon accumulation potential. While testing data remains limited, the coastal environment and predominantly elevated construction styles typically result in minimal radon concerns.

Edisto Island, SC Radon Mitigation

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

Edisto Island, SC Radon Testing

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

Edisto Island Radon Facts

Key details about the radon risk profile for Edisto Island and the 29438 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Charleston County, SC

Zip Code

29438

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Edisto Island and the 29438 zip code are located in Charleston 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 Edisto Island, SC

What EPA Radon Zone is Edisto Island in?

Edisto Island and the 29438 zip code are in Charleston 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 Edisto Island?

Radon mitigation in Edisto 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 Edisto 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.

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