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Big Wells, TX Radon Levels

Check local Big Wells radon levels and find certified testing and mitigation professionals to keep your home safe


Big Wells, TX Radon Facts

EPA Radon Zone Zone 3 — Low Risk < 2.0 pCi/L (Zone 3)
County Dimmit County, TX
Zip Code 78830

Located in rural Dimmit County near the Mexican border, Big Wells sits atop Cretaceous limestone and clay formations typical of South Texas ranch country. Radon testing data for the 78830 area is currently unavailable, but the underlying geology generally produces lower radon levels consistent with EPA Zone 3. Property owners should still consider testing, particularly in homes with enclosed foundations or those built over caliche hardpan layers.

Big Wells, TX Radon Mitigation

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

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Radon FAQ for Big Wells, TX

What EPA Radon Zone is Big Wells in?
Big Wells and the 78830 zip code are in Dimmit 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 Big Wells?
Radon mitigation in Big Wells 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 Big Wells?
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 in Texas with the most user-submitted radon test data, ranked by number of submissions.

CityAvg User Radon LevelSubmissions
Lubbock 12.70 pCi/L 10
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