Toledo, WA Radon Mitigation and Testing

Q: What EPA Radon Zone is Toledo in?

Toledo is in Lewis County, EPA Zone 3.

Q: How much does radon mitigation cost in Toledo?

Radon mitigation typically costs between $800 and $2,000. Most standard systems fall in the $1,000-$1,500 range.

Lewis County

EPA Zone 3

Positioned in Lewis County's forested landscape between Mount Rainier and Mount St. Helens, Toledo experiences EPA Zone 3's generally lower radon potential from volcanic soils. Local housing reflects rural Pacific Northwest character with many homes featuring crawl spaces or slab foundations rather than full basements. Although comprehensive testing data for 98591 is currently unavailable, homeowners should test since radon levels can be unpredictable in volcanic terrain.

Toledo, WA Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

Toledo, WA Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Toledo Radon Facts

Key details about the radon risk profile for Toledo and the 98591 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Lewis County, WA

Zip Code

98591

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Toledo and the 98591 zip code are located in Lewis County, which has an EPA assigned Radon Zone of 3. A radon zone of 3 predicts an average indoor radon screening level less than 2 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Toledo, WA

What EPA Radon Zone is Toledo in?

Toledo and the 98591 zip code are in Lewis 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 Toledo?

Radon mitigation in Toledo 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 Toledo?

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 with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Vancouver	6.56 pCi/L	9
Kent	3.60 pCi/L	5
Seattle	5.25 pCi/L	4
Olympia	5.00 pCi/L	4
Bellevue	3.75 pCi/L	4
Spokane	11.67 pCi/L	3
Camas	8.00 pCi/L	3
Centralia	7.00 pCi/L	3
Bellingham	4.50 pCi/L	2
Kirkland	4.50 pCi/L	2
Washougal	8.00 pCi/L	1
Ridgefield	5.00 pCi/L	1
Moses Lake	No submissions	0