2026-02-17 · 4 min read
Radon Mitigation Cost in Mississippi (2026)
Mississippi is mostly low radon risk — Gulf Coast alluvial geology produces little radon. But testing is still worthwhile. Mitigation costs $850–$1,700 when needed.
Radon in Mississippi
Mississippi is one of the lower-risk radon states. The Gulf Coastal Plain geology — alluvial river deposits, sedimentary rock, and clay — contains minimal uranium, so radon production is low. Most of the state is EPA Zone 3.
The exception is northeastern Mississippi — Tishomingo, Alcorn, and Prentiss counties — where Appalachian-related geology pushes readings slightly higher (Zone 2). The Mississippi River delta counties (Bolivar, Coahoma, Sunflower) are among the lowest-radon areas in the country.
Even in Zone 3, testing is worthwhile — individual homes can still have elevated readings due to local soil conditions, building materials, or construction details.
Cost by Foundation Type
Slab-on-Grade: $850–$1,600
Most Mississippi homes built after 1960 are slab-on-grade. Low labor costs make Mississippi among the most affordable states for mitigation.
Pier-and-Beam: $1,800–$4,000
Many older Mississippi homes — particularly in the Delta and river communities — have pier-and-beam or raised foundations. Open crawl space conditions vary but humidity and soil conditions can complicate vapor barrier installation.
Mississippi-Specific Factors
High humidity: Mississippi's Gulf Coast climate creates significant crawl space moisture challenges. Radon mitigation and moisture management often need to be addressed together.
Contractor availability: Mississippi has fewer certified radon contractors than most states, reflecting the lower market demand in a low-risk state. The Jackson metro has the most options; rural areas may have very few.
Low costs: Mississippi's low cost of living means mitigation is more affordable here than almost anywhere else in the country.
Mississippi Resources
- MS Dept of Environmental Quality: mdeq.ms.gov (search "radon")
- Verify NRPP: radonproficiency.org
- Verify NRSB: nrsb.org
Frequently Asked Questions
Does Mississippi have a radon problem?
Mississippi is predominantly EPA Zone 3 (low risk). The alluvial and Gulf Coastal Plain geology produces very little radon. However, individual homes can still test above 4.0 pCi/L, and northeastern Mississippi near the Appalachian foothills has slightly higher readings.
How much does radon mitigation cost in Mississippi?
Mississippi has some of the lowest mitigation costs in the country — $850–$1,600 for slab homes. The lower cost of living and labor market keep contractor rates competitive.
Does Mississippi require radon contractor licensing?
Mississippi has no state radon contractor licensing. Hire NRPP or NRSB certified contractors.
Find a Certified Mitigator Near You
Every contractor on RadonBase is NRPP or NRSB certified — mitigators only, no testers.
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