Johnsonville, SC Radon Levels
Check local Johnsonville radon levels and find certified testing and mitigation professionals to keep your home safe
Johnsonville, SC Radon Facts
EPA Radon Zone
Zone 3 — Low Risk
< 2.0 pCi/L (Zone 3)
County
Florence County, SC
Zip Code
29555
Situated in Florence County within the Florence Metro area, Johnsonville sits on Coastal Plain sediments where radon levels are typically lower but can vary by specific location. Limited testing data for the 29555 zip code makes individual home testing advisable for residents seeking to understand their exposure risk.
Johnsonville, 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 Johnsonville, SC
What EPA Radon Zone is Johnsonville in?
Johnsonville and the 29555 zip code are in Florence 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 Johnsonville?
Radon mitigation in Johnsonville 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 Johnsonville?
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 |