Sweeny, TX Radon Mitigation and Testing

Q: What EPA Radon Zone is Sweeny in?

Sweeny is in Brazoria County, EPA Zone 3.

Q: How much does radon mitigation cost in Sweeny?

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

Brazoria County

EPA Zone 3

Located southeast of Houston in Brazoria County, Sweeny sits within the Gulf Coastal Plain where clay-rich sediments typically result in lower radon potential. The community features a mix of older residential properties and newer suburban development, with most homes built on slab-on-grade foundations common to the Texas Gulf Coast. While testing data for zip code 77480 is limited, the area's geological characteristics generally produce minimal radon concerns.

Sweeny, TX Radon Mitigation

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

Sweeny, TX Radon Testing

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

Sweeny Radon Facts

Key details about the radon risk profile for Sweeny and the 77480 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Brazoria County, TX

Zip Code

77480

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Sweeny and the 77480 zip code are located in Brazoria 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 Sweeny, TX

What EPA Radon Zone is Sweeny in?

Sweeny and the 77480 zip code are in Brazoria 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 Sweeny?

Radon mitigation in Sweeny 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 Sweeny?

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