Harlingen, TX Radon Mitigation and Testing

Q: What EPA Radon Zone is Harlingen in?

Harlingen is in Cameron County, EPA Zone 3.

Q: How much does radon mitigation cost in Harlingen?

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

Situated in Cameron County near the Mexican border, Harlingen's location in the Rio Grande Valley on alluvial soils typically results in minimal radon concerns. However, with limited testing data available for the 78550 zip code area, homeowners are encouraged to conduct baseline radon measurements to ensure safe indoor air quality.

Harlingen, TX Radon Mitigation

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

Harlingen, TX Radon Testing

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

Harlingen Radon Facts

Key details about the radon risk profile for Harlingen and the 78550 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Cameron County, TX

Zip Code

78550

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Harlingen and the 78550 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 Harlingen, TX

What EPA Radon Zone is Harlingen in?

Harlingen and the 78550 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 Harlingen?

Radon mitigation in Harlingen 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 Harlingen?

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