Cornelius, OR Radon Mitigation and Testing

Q: What EPA Radon Zone is Cornelius in?

Cornelius is in Washington County, EPA Zone 2.

Q: How much does radon mitigation cost in Cornelius?

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

Washington County

EPA Zone 2

Part of the Portland Metro area in Washington County, Cornelius sits on Columbia River basalt and sedimentary formations that typically produce moderate radon levels. With testing data for zip code 97113 currently limited, homeowners should conduct radon measurements to determine their specific exposure levels in this geologically diverse region.

Cornelius, OR Radon Mitigation

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

Cornelius, OR Radon Testing

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

Cornelius Radon Facts

Key details about the radon risk profile for Cornelius and the 97113 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Washington County, OR

Zip Code

97113

Predicted Screening Level

2–4 pCi/L (Zone 2)

Cornelius and the 97113 zip code are located in Washington 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 Cornelius, OR

What EPA Radon Zone is Cornelius in?

Cornelius and the 97113 zip code are in Washington 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 Cornelius?

Radon mitigation in Cornelius 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 Cornelius?

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