San Juan, TX Radon Mitigation and Testing

Q: What EPA Radon Zone is San Juan in?

San Juan is in Hidalgo County, EPA Zone 3.

Q: How much does radon mitigation cost in San Juan?

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

Hidalgo County

EPA Zone 3

Situated in Hidalgo County along the Rio Grande Valley near the Mexican border, San Juan is built primarily on alluvial deposits and clay soils. Radon testing data for zip code 78589 remains limited, making it challenging to determine community-wide exposure levels. Despite the generally lower radon potential in South Texas, homeowners should still consider testing, particularly in homes with slab-on-grade foundations where radon can accumulate.

San Juan, TX Radon Mitigation

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

San Juan, TX Radon Testing

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

San Juan Radon Facts

Key details about the radon risk profile for San Juan and the 78589 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Hidalgo County, TX

Zip Code

78589

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

San Juan and the 78589 zip code are located in Hidalgo 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 San Juan, TX

What EPA Radon Zone is San Juan in?

San Juan and the 78589 zip code are in Hidalgo 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 San Juan?

Radon mitigation in San Juan 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 San Juan?

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