The Dalles, OR Radon Levels
Check local The Dalles radon levels and find certified testing and mitigation professionals to keep your home safe
The Dalles, OR Radon Facts
EPA Radon Zone
Zone 2 — Moderate Risk
2–4 pCi/L (Zone 2)
County
Wasco County, OR
Zip Code
97058
Located in Wasco County along the Columbia River Gorge, The Dalles sits on basaltic bedrock from the Columbia River Basalt Group that generally produces lower radon levels. While testing data for the 97058 area isn't extensively documented, the volcanic geology suggests moderate radon risk. Professional radon testing remains advisable for homeowners seeking to establish baseline readings for their properties.
The Dalles, OR 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 The Dalles, OR
What EPA Radon Zone is The Dalles in?
The Dalles and the 97058 zip code are in Wasco County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.
How much does radon mitigation cost in The Dalles?
Radon mitigation in The Dalles 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 The Dalles?
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.
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