Smithville, TX Radon Mitigation and Testing

Q: What EPA Radon Zone is Smithville in?

Smithville is in Bastrop County, EPA Zone 3.

Q: How much does radon mitigation cost in Smithville?

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

Bastrop County

EPA Zone 3

Found in Bastrop County within the Austin Metro area, Smithville sits on Texas coastal plain formations that typically produce lower radon concentrations but can vary significantly by location. Limited testing data for zip code 78957 makes baseline home testing important for establishing individual risk levels. The community's housing stock, including both historic properties and newer construction common in central Texas, generally features slab-on-grade foundations that can still accumulate radon under certain conditions.

Smithville, TX Radon Mitigation

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

Smithville, TX Radon Testing

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

Smithville Radon Facts

Key details about the radon risk profile for Smithville and the 78957 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Bastrop County, TX

Zip Code

78957

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Smithville and the 78957 zip code are located in Bastrop 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 Smithville, TX

What EPA Radon Zone is Smithville in?

Smithville and the 78957 zip code are in Bastrop 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 Smithville?

Radon mitigation in Smithville 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 Smithville?

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