Port Isabel, TX Radon Mitigation and Testing

Q: What EPA Radon Zone is Port Isabel in?

Port Isabel is in Cameron County, EPA Zone 3.

Q: How much does radon mitigation cost in Port Isabel?

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

Cameron County

EPA Zone 3

Located at the southern tip of Texas in Cameron County near the Gulf Coast, Port Isabel's coastal sandy soils and sea-level elevation typically result in minimal radon accumulation. The 78578 zip code area lacks comprehensive testing data, though the coastal geology generally suggests lower radon risk. Residents should still consider baseline testing, as individual home characteristics can occasionally create unexpected radon entry points.

Port Isabel, TX Radon Mitigation

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

Port Isabel, TX Radon Testing

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

Port Isabel Radon Facts

Key details about the radon risk profile for Port Isabel and the 78578 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Cameron County, TX

Zip Code

78578

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Port Isabel and the 78578 zip code are located in Cameron 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 Port Isabel, TX

What EPA Radon Zone is Port Isabel in?

Port Isabel and the 78578 zip code are in Cameron 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 Port Isabel?

Radon mitigation in Port Isabel 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 Port Isabel?

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