Randle, WA Radon Mitigation and Testing

Q: What EPA Radon Zone is Randle in?

Randle is in Lewis County, EPA Zone 3.

Q: How much does radon mitigation cost in Randle?

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

Nestled in the Cascade foothills of Lewis County, this rural zip code 98377 community currently has limited radon testing data available. Washington's volcanic geology and varied terrain create unpredictable radon conditions, particularly in mountainous areas like Randle. Given the region's geological complexity and the lack of local testing data, homeowners should consider professional radon assessment to understand their individual property's risk profile.

Randle, WA Radon Mitigation

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

Randle, WA Radon Testing

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

Randle Radon Facts

Key details about the radon risk profile for Randle and the 98377 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Lewis County, WA

Zip Code

98377

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Randle and the 98377 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 Randle, WA

What EPA Radon Zone is Randle in?

Randle and the 98377 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 Randle?

Radon mitigation in Randle 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 Randle?

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