Jefferson, OR Radon Mitigation and Testing

Q: What EPA Radon Zone is Jefferson in?

Jefferson is in Marion County, EPA Zone 3.

Q: How much does radon mitigation cost in Jefferson?

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

Marion County

EPA Zone 3

Located in Marion County within the Salem Metro area, Jefferson sits in the Willamette Valley where volcanic soils and sedimentary deposits create variable radon conditions. While radon testing data for Jefferson (zip code 97352) remains limited, homeowners should consider testing given Oregon's diverse geological conditions. Many homes in this area feature crawl spaces and slab foundations typical of Pacific Northwest construction.

Jefferson, OR Radon Mitigation

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

Jefferson, OR Radon Testing

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

Jefferson Radon Facts

Key details about the radon risk profile for Jefferson and the 97352 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Marion County, OR

Zip Code

97352

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Jefferson and the 97352 zip code are located in Marion County, which has an EPA assigned Radon Zone of 3. A radon zone of 3 predicts an average indoor radon screening level less than 2 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Jefferson, OR

What EPA Radon Zone is Jefferson in?

Jefferson and the 97352 zip code are in Marion County, which has an EPA assigned Radon Zone of 3. A zone of 3 predicts an average indoor radon screening level less than 2 pCi/L.

How much does radon mitigation cost in Jefferson?

Radon mitigation in Jefferson 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 Jefferson?

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