Saint Helens, OR Radon Mitigation and Testing

Q: What EPA Radon Zone is Saint Helens in?

Saint Helens is in Columbia County, EPA Zone 2.

Q: How much does radon mitigation cost in Saint Helens?

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

Positioned in Columbia County along the Portland Metro area, Saint Helens benefits from EPA Zone 2 classification indicating moderate radon potential. The 97051 zip code area currently lacks sufficient testing data to establish local radon patterns. Given Oregon's variable geological conditions and the mix of housing types throughout the Columbia River region, professional radon testing remains the only reliable way to determine individual home exposure levels.

Saint Helens, OR Radon Mitigation

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

Saint Helens, OR Radon Testing

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

Saint Helens Radon Facts

Key details about the radon risk profile for Saint Helens and the 97051 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Columbia County, OR

Zip Code

97051

Predicted Screening Level

2–4 pCi/L (Zone 2)

Saint Helens and the 97051 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 Saint Helens, OR

What EPA Radon Zone is Saint Helens in?

Saint Helens and the 97051 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 Saint Helens?

Radon mitigation in Saint Helens 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 Saint Helens?

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