Calliham, TX Radon Mitigation and Testing

Q: What EPA Radon Zone is Calliham in?

Calliham is in McMullen County, EPA Zone Unknown.

Q: How much does radon mitigation cost in Calliham?

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

McMullen County

EPA Zone Unknown

Positioned in South Texas's sparsely populated McMullen County, Calliham (78007) sits over sedimentary formations and clay soils that typically produce minimal radon concentrations. This ranch country area has limited residential development and consequently sparse radon testing data. Given the region's geology and predominant slab-on-grade construction, radon levels are generally expected to remain low, though individual testing can confirm specific property conditions.

Calliham, TX Radon Mitigation

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

Calliham, TX Radon Testing

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

Calliham Radon Facts

Key details about the radon risk profile for Calliham and the 78007 zip code area.

EPA Radon Zone

Unknown

County

McMullen County, TX

Zip Code

78007

Predicted Screening Level

Unknown

Calliham and the 78007 zip code are located in McMullen County, which has an EPA assigned Radon Zone of Unknown. A radon zone of Unknown does not have sufficient data for classification. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Calliham, TX

What EPA Radon Zone is Calliham in?

Calliham and the 78007 zip code are in McMullen County, which has an EPA assigned Radon Zone of Unknown. A zone of Unknown does not have sufficient data for classification.

How much does radon mitigation cost in Calliham?

Radon mitigation in Calliham 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 Calliham?

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