Scappoose, OR Radon Mitigation and Testing

Q: What EPA Radon Zone is Scappoose in?

Scappoose is in Columbia County, EPA Zone 2.

Q: How much does radon mitigation cost in Scappoose?

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

Columbia County

EPA Zone 2

Located in Columbia County within the Portland Metro area, Scappoose sits in Oregon's Columbia River Valley where alluvial soils and volcanic deposits create variable radon conditions. Testing data is currently limited for this community, making it important for homeowners to conduct their own radon measurements. Given Oregon's diverse geology and the prevalence of basements and crawl spaces in the region, residential testing remains the best way to assess individual home risk levels.

Scappoose, OR Radon Mitigation

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

Scappoose, OR Radon Testing

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

Scappoose Radon Facts

Key details about the radon risk profile for Scappoose and the 97056 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Columbia County, OR

Zip Code

97056

Predicted Screening Level

2–4 pCi/L (Zone 2)

Scappoose and the 97056 zip code are located in Columbia 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 Scappoose, OR

What EPA Radon Zone is Scappoose in?

Scappoose and the 97056 zip code are in Columbia 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 Scappoose?

Radon mitigation in Scappoose 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 Scappoose?

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 Oregon

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

City	Avg User Radon Level	Submissions
Corvallis	5.60 pCi/L	5
Astoria	9.25 pCi/L	4
La Grande	10.67 pCi/L	3
Bend	3.33 pCi/L	3
Salem	9.00 pCi/L	2
Eugene	7.00 pCi/L	2
Medford	7.00 pCi/L	1
Dundee	6.00 pCi/L	1
Ashland	4.00 pCi/L	1
Portland	4.00 pCi/L	1
Lincoln City	No submissions	0
West Linn	No submissions	0