Smiley, TX Radon Mitigation and Testing

Q: What EPA Radon Zone is Smiley in?

Smiley is in Gonzales County, EPA Zone 3.

Q: How much does radon mitigation cost in Smiley?

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

Gonzales County

EPA Zone 3

Positioned in Gonzales County within the Texas Gulf Coastal Plain, Smiley sits on Miocene-era sands and clays that generally produce lower radon potential across south-central Texas. The community's homes typically feature slab-on-grade construction with some pier-and-beam foundations, reflecting regional building practices for the area's stable clay soils. While testing data for zip code 78159 is currently limited, homeowners may still benefit from radon testing to establish baseline levels in this EPA Zone 3 community.

Smiley, TX Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

Smiley, TX Radon Testing

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

Smiley Radon Facts

Key details about the radon risk profile for Smiley and the 78159 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Gonzales County, TX

Zip Code

78159

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Smiley and the 78159 zip code are located in Gonzales 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 Smiley, TX

What EPA Radon Zone is Smiley in?

Smiley and the 78159 zip code are in Gonzales 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 Smiley?

Radon mitigation in Smiley 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 Smiley?

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