Radon in ZIP code 98363
Last updated
ZIP 98363 lies entirely in Clallam County, Washington. EPA’s radon zone for this area: Zone 3, low potential.
Predicted average indoor screening level below 2 pCi/L.
What this means for homes in 98363
EPA built its zone map county by county in 1993, so every address in 98363 shares Clallam County’s prediction. The zone is a starting point, not a measurement of your house. A Zone 3 prediction is the lowest, but EPA still finds homes above the action level in these areas.
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 98363
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 Clallam County
Washington radon help
WA State Department of Health, Community and Environment: Radon (360-236-3200) can help with test kits, local data and credentialed professionals: doh.wa.gov/community-and-environment/contaminants/radon.
Frequently asked questions
What is the radon zone for ZIP code 98363?
ZIP 98363 lies in Clallam County, which EPA places in Zone 3 (low potential).
Should I test for radon in 98363?
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