Orondo, WA Radon Mitigation and Testing

Q: What EPA Radon Zone is Orondo in?

Orondo is in Douglas County, EPA Zone 2.

Q: How much does radon mitigation cost in Orondo?

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

Douglas County

EPA Zone 2

Situated in Douglas County along the Columbia River valley in central Washington, Orondo sits within EPA Zone 2 with moderate radon potential. Limited testing data in zip code 98843 makes it essential for local homeowners to conduct radon testing in their homes. The region's diverse geological conditions and varying foundation types mean individual properties can have significantly different radon levels.

Orondo, WA Radon Mitigation

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

Orondo, WA Radon Testing

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

Orondo Radon Facts

Key details about the radon risk profile for Orondo and the 98843 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Douglas County, WA

Zip Code

98843

Predicted Screening Level

2–4 pCi/L (Zone 2)

Orondo and the 98843 zip code are located in Douglas County, which has an EPA assigned Radon Zone of 2. A radon zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Orondo, WA

What EPA Radon Zone is Orondo in?

Orondo and the 98843 zip code are in Douglas 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 Orondo?

Radon mitigation in Orondo 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 Orondo?

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