Kalama, WA Radon Levels
Check local Kalama radon levels and find certified testing and mitigation professionals to keep your home safe
Kalama, WA Radon Facts
EPA Radon Zone
Zone 3 — Low Risk
< 2.0 pCi/L (Zone 3)
County
Cowlitz County, WA
Zip Code
98625
Located along the Columbia River in Cowlitz County, Kalama sits on volcanic deposits and river sediments that typically produce moderate radon levels in southwestern Washington. Testing data for this 98625 community is currently limited, making individual home assessment important for residents. The area's combination of volcanic geology and varying foundation types warrants professional radon testing.
Kalama, WA 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 Kalama, WA
What EPA Radon Zone is Kalama in?
Kalama and the 98625 zip code are in Cowlitz 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 Kalama?
Radon mitigation in Kalama 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 Kalama?
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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