Sour Lake, TX Radon Mitigation and Testing

Q: What EPA Radon Zone is Sour Lake in?

Sour Lake is in Hardin County, EPA Zone 3.

Q: How much does radon mitigation cost in Sour Lake?

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

Hardin County

EPA Zone 3

Positioned in Hardin County within the Beaumont Metro area of southeast Texas, Sour Lake occupies zip code 77659 where Gulf Coastal Plain sediments typically maintain lower radon levels. The area's flat terrain and clay-rich soils generally limit radon migration, though testing data remains limited. Even in lower-risk regions like the Texas Gulf Coast, individual properties can occasionally surprise with elevated readings.

Sour Lake, TX Radon Mitigation

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

Sour Lake, TX Radon Testing

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

Sour Lake Radon Facts

Key details about the radon risk profile for Sour Lake and the 77659 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Hardin County, TX

Zip Code

77659

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Sour Lake and the 77659 zip code are located in Hardin 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 Sour Lake, TX

What EPA Radon Zone is Sour Lake in?

Sour Lake and the 77659 zip code are in Hardin 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 Sour Lake?

Radon mitigation in Sour Lake 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 Sour Lake?

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