Mount Pleasant, SC Radon Levels
Check local Mount Pleasant radon levels and find certified testing and mitigation professionals to keep your home safe
Mount Pleasant, SC Radon Facts
EPA Radon Zone
Zone 3 — Low Risk
< 2.0 pCi/L (Zone 3)
County
Charleston County, SC
Zip Code
29464
Located in Charleston County along the South Carolina coast, Mount Pleasant sits in EPA Zone 3 where coastal plain sediments typically produce lower radon levels compared to inland regions. Testing data for zip codes 29464 and 29466 remains limited, though the area's geology and proximity to the Atlantic Ocean suggest moderate-to-low radon risk. Residents should still consider testing, especially in homes with crawl spaces or enclosed foundation areas where radon can occasionally accumulate.
Mount Pleasant, 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 Mount Pleasant, SC
What EPA Radon Zone is Mount Pleasant in?
Mount Pleasant and the 29464 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 Mount Pleasant?
Radon mitigation in Mount Pleasant 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 Mount Pleasant?
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 |