Laredo, TX Radon Mitigation and Testing

Q: What EPA Radon Zone is Laredo in?

Laredo is in Webb County, EPA Zone 3.

Q: How much does radon mitigation cost in Laredo?

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

Webb County

EPA Zone 3

As Webb County's largest city along the Rio Grande, Laredo sits in South Texas where Cretaceous limestone and sandstone formations typically produce lower radon levels. Testing data for the metro area's zip codes (78040-78046) remains limited, though the EPA Zone 3 classification suggests generally lower risk. However, individual testing is still recommended, particularly for homes with concrete slab construction that may have developed cracks over time in this region's expansive clay soils.

Laredo, TX Radon Mitigation

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

Laredo, TX Radon Testing

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

Laredo Radon Facts

Key details about the radon risk profile for Laredo and the 78040 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Webb County, TX

Zip Code

78040

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Laredo and the 78040 zip code are located in Webb 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 Laredo, TX

What EPA Radon Zone is Laredo in?

Laredo and the 78040 zip code are in Webb 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 Laredo?

Radon mitigation in Laredo 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 Laredo?

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