Seguin, TX Radon Mitigation and Testing

Q: What EPA Radon Zone is Seguin in?

Seguin is in Guadalupe County, EPA Zone 3.

Q: How much does radon mitigation cost in Seguin?

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

Guadalupe County

EPA Zone 3

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.

Seguin, TX Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Seguin Radon Facts

Key details about the radon risk profile for Seguin and the 78155 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Guadalupe County, TX

Zip Code

78155

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Seguin and the 78155 zip code are located in Guadalupe County, which has an EPA assigned Radon Zone of 3. A radon zone of 3 predicts an average indoor radon screening level less than 2 pCi/L. The EPA recommends testing every home regardless of zone classification.

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 with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Lubbock	12.67 pCi/L	9
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