Marquez, TX Radon Mitigation and Testing

Q: What EPA Radon Zone is Marquez in?

Marquez is in Leon County, EPA Zone Unknown.

Q: How much does radon mitigation cost in Marquez?

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

Leon County

EPA Zone Unknown

Located in Leon County in east-central Texas, Marquez sits within the Post Oak Savannah region where sandy soils and sedimentary rock formations typically result in lower radon potential. With no current testing data for zip code 77865, residents should still consider radon testing to ensure indoor air quality. Testing provides the only reliable way to determine your home's radon levels.

Marquez, TX Radon Mitigation

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

Marquez, TX Radon Testing

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

Marquez Radon Facts

Key details about the radon risk profile for Marquez and the 77865 zip code area.

EPA Radon Zone

Unknown

County

Leon County, TX

Zip Code

77865

Predicted Screening Level

Unknown

Marquez and the 77865 zip code are located in Leon 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 Marquez, TX

What EPA Radon Zone is Marquez in?

Marquez and the 77865 zip code are in Leon 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 Marquez?

Radon mitigation in Marquez 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 Marquez?

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