Kennewick, WA Radon Levels
Check local Kennewick radon levels and find certified testing and mitigation professionals to keep your home safe
Kennewick, WA Radon Facts
EPA Radon Zone
Zone 2 — Moderate Risk
2–4 pCi/L (Zone 2)
County
Benton County, WA
Zip Code
99336
Positioned in Benton County as the heart of the Kennewick Metro area, this Columbia River valley community sits over basalt bedrock and alluvial deposits that can influence radon levels. Testing data for zip code 99336 remains limited, though the area's volcanic geology and typical ranch-style construction with concrete slab foundations may reduce radon risk compared to basement-heavy regions. Nevertheless, homeowners should conduct testing as radon can still accumulate in enclosed spaces and crawl areas.
Kennewick, 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 Kennewick, WA
What EPA Radon Zone is Kennewick in?
Kennewick and the 99336 zip code are in Benton 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 Kennewick?
Radon mitigation in Kennewick 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 Kennewick?
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.
Most Active Radon Markets in Washington
Cities in Washington with the most user-submitted radon test data, ranked by number of submissions.