Radon in ZIP code 28770
Last updated
ZIP 28770 lies entirely in Buncombe County, North Carolina. EPA’s radon zone for this area: Zone 1, highest potential.
Predicted average indoor screening level above 4 pCi/L.
What this means for homes in 28770
EPA built its zone map county by county in 1993, so every address in 28770 shares Buncombe County’s prediction. The zone is a starting point, not a measurement of your house. Zone 1 areas like this one have a high share of homes above 4 pCi/L, so testing is a priority.
Next: read how to test your home, then check the number with the level calculator.
Free, no obligation
Get radon quotes from certified pros in ZIP 28770
Tell us what you need and we will try to connect you with up to three state-certified or licensed radon professionals who work in your area. It is free and there is no obligation.
We only share your request with radon professionals for this job. We do not sell your details to anyone else. Radon by ZIP may be paid by professionals for leads or featured placement.
Nearby ZIP codes in Buncombe County
North Carolina radon help
NC NC Department of Health and Human Services, Radon Program (828-712-0972) can help with test kits, local data and credentialed professionals: www.ncdhhs.gov/divisions/health-service-regulation/north-carolina-radon-program.
Frequently asked questions
What is the radon zone for ZIP code 28770?
ZIP 28770 lies in Buncombe County, which EPA places in Zone 1 (highest potential).
Should I test for radon in 28770?
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
Free. We email you the download link, plus an occasional plain-English guide. Unsubscribe any time. We never sell your email. Privacy