Princeton, OR Radon Mitigation and Testing

Q: What EPA Radon Zone is Princeton in?

Princeton is in Harney County, EPA Zone 2.

Q: How much does radon mitigation cost in Princeton?

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

Harney County

EPA Zone 2

Princeton in remote Harney County sits in Oregon's high desert region, where volcanic geology typically produces lower radon levels. Testing data for zip code 97721 is currently limited, but the area's basaltic bedrock and sparse population make individual home assessment valuable. Oregon's diverse geological zones can create varying radon conditions across different regions.

Princeton, OR Radon Mitigation

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

Princeton, OR Radon Testing

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

Princeton Radon Facts

Key details about the radon risk profile for Princeton and the 97721 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Harney County, OR

Zip Code

97721

Predicted Screening Level

2–4 pCi/L (Zone 2)

Princeton and the 97721 zip code are located in Harney 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 Princeton, OR

What EPA Radon Zone is Princeton in?

Princeton and the 97721 zip code are in Harney 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 Princeton?

Radon mitigation in Princeton 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 Princeton?

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