Warrenton, OR Radon Mitigation and Testing

Q: What EPA Radon Zone is Warrenton in?

Warrenton is in Clatsop County, EPA Zone 2.

Q: How much does radon mitigation cost in Warrenton?

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

Clatsop County

EPA Zone 2

Positioned near the Columbia River mouth in Clatsop County, Warrenton sits on marine sedimentary deposits that typically yield low radon levels along Oregon's coast. Testing data for this 97146 ZIP code fishing community remains limited, though home-specific assessment is still recommended. The area's coastal location and sandy soils generally reduce radon risk, but individual properties near different geological formations may vary.

Warrenton, OR Radon Mitigation

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

Warrenton, OR Radon Testing

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

Warrenton Radon Facts

Key details about the radon risk profile for Warrenton and the 97146 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Clatsop County, OR

Zip Code

97146

Predicted Screening Level

2–4 pCi/L (Zone 2)

Warrenton and the 97146 zip code are located in Clatsop 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 Warrenton, OR

What EPA Radon Zone is Warrenton in?

Warrenton and the 97146 zip code are in Clatsop 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 Warrenton?

Radon mitigation in Warrenton 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 Warrenton?

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