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Seguin, TX Radon Levels

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


Seguin, TX Radon Facts

EPA Radon Zone Zone 3 — Low Risk < 2.0 pCi/L (Zone 3)
County Guadalupe County, TX
Zip Code 78155

Located in Guadalupe County within the San Antonio Metro area, Seguin currently has limited radon testing data available for analysis. The region's limestone bedrock and clay soils over the Edwards Plateau can create variable radon conditions throughout central Texas. Residents in zip code 78155 should establish baseline measurements to understand their local radon exposure levels.

Seguin, TX 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 Seguin, TX

What EPA Radon Zone is Seguin in?
Seguin and the 78155 zip code are in Guadalupe 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 Seguin?
Radon mitigation in Seguin 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 Seguin?
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 Texas

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

CityAvg User Radon LevelSubmissions
Lubbock 12.70 pCi/L 10
San Antonio 6.57 pCi/L 7
Austin 6.14 pCi/L 7
Dallas 8.00 pCi/L 5
Abilene 4.50 pCi/L 2
Houston 3.50 pCi/L 2
Plano 6.00 pCi/L 1
Frisco 3.00 pCi/L 1
Nacogdoches No submissions 0