Saint Stephen, SC Radon Levels

Q: What EPA Radon Zone is Saint Stephen in?

Saint Stephen is in Berkeley County, EPA Zone 3.

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

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

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

Saint Stephen, SC Radon Facts

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

County Berkeley County, SC

Zip Code 29479

Saint Stephen in Berkeley County sits within South Carolina's Coastal Plain region, where sandy soils and sedimentary formations generally produce lower radon levels than the state's upland areas. The Charleston Metro community features a mix of traditional Southern homes and newer suburban development, predominantly built on slab or crawl space foundations. Current radon testing data remains limited, though individual home assessment provides the most reliable way for residents to understand their property's radon characteristics.

Saint Stephen, SC Radon Mitigation

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

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Radon FAQ for Saint Stephen, SC

What EPA Radon Zone is Saint Stephen in?

Saint Stephen and the 29479 zip code are in Berkeley 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 Stephen?

Radon mitigation in Saint Stephen 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 Stephen?

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 in South Carolina with the most user-submitted radon test data, ranked by number of submissions.

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