Radon in ZIP code 79043
Last updated
ZIP 79043 crosses 3 county lines. Most of its land (81.7%) is in Castro County, Texas. EPA’s radon zone for this area: Zone 2, moderate potential.
Predicted average indoor screening level from 2 to 4 pCi/L.
Predicted average indoor screening level from 2 to 4 pCi/L.
Predicted average indoor screening level from 2 to 4 pCi/L.
What this means for homes in 79043
EPA built its zone map county by county in 1993, so every address in each part of 79043 shares its county’s prediction. The zone is a starting point, not a measurement of your house. In a Zone 2 area many homes are fine and many are not; only a test tells you which yours is.
Because 79043 crosses county lines, your county depends on your street. Your property tax bill or county assessor site shows which county you are in. Next: read how to test your home, then check the number with the level calculator.
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Nearby ZIP codes in Castro County
Texas radon help
TX Department of State Health Services, Radon Program (806-834-6202) can help with test kits, local data and credentialed professionals: www.depts.ttu.edu/ceweb/radon.
Frequently asked questions
What is the radon zone for ZIP code 79043?
ZIP 79043 spans 3 counties. The highest-potential zone among them is Zone 2 (moderate potential). Castro County: Zone 2 (81.7% of the ZIP's land); Lamb County: Zone 2 (12.7% of the ZIP's land); Hale County: Zone 2 (5.5% of the ZIP's land).
Should I test for radon in 79043?
Yes. EPA recommends testing every home regardless of zone, because radon varies from house to house. Fix the home if a confirmed result is 4 pCi/L or higher, and consider fixing between 2 and 4 pCi/L.
Free checklist · PDF
Radon Test Checklist
A one-page, step-by-step checklist for running a home radon test right the first time, and what to do with the number.
- Short-term vs. long-term test: which to use
- Closed-house conditions and where to place the kit
- What 2, 4 and 8 pCi/L mean and when to fix
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