Hay, WA Radon Levels
Check local Hay radon levels and find certified testing and mitigation professionals to keep your home safe
Hay, WA Radon Facts
EPA Radon Zone
Zone 2 — Moderate Risk
2–4 pCi/L (Zone 2)
County
Whitman County, WA
Zip Code
99136
Rural Whitman County encompasses this small community built on the rolling hills of the Palouse region, where loess soils over basalt bedrock create moderate radon potential. Current testing data for the 99136 zip code is limited, emphasizing the value of individual home testing for residents. The area's sparse housing stock includes both historic farmsteads and newer rural residences, with basement construction less common due to the region's agricultural character.
Hay, 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 Hay, WA
What EPA Radon Zone is Hay in?
Hay and the 99136 zip code are in Whitman 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 Hay?
Radon mitigation in Hay 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 Hay?
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.