Oakville, WA Radon Mitigation and Testing

Q: What EPA Radon Zone is Oakville in?

Oakville is in Grays Harbor County, EPA Zone 3.

Q: How much does radon mitigation cost in Oakville?

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

Grays Harbor County

EPA Zone 3

Situated in Grays Harbor County within the Olympia Metro's western reaches, Oakville sits above Washington's coastal plain geology near the Pacific Ocean. The 98568 zip code features residential properties with foundation types adapted to the region's wet climate, including raised foundations and crawl space construction. Although comprehensive radon testing data remains limited for this community, residents should consider testing given Washington state's geological diversity and varying radon potential across different regions.

Oakville, WA Radon Mitigation

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

Oakville, WA Radon Testing

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

Oakville Radon Facts

Key details about the radon risk profile for Oakville and the 98568 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Grays Harbor County, WA

Zip Code

98568

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Oakville and the 98568 zip code are located in Grays Harbor 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 Oakville, WA

What EPA Radon Zone is Oakville in?

Oakville and the 98568 zip code are in Grays Harbor 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 Oakville?

Radon mitigation in Oakville 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 Oakville?

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