Dayton, OR Radon Mitigation and Testing

Q: What is the average radon level in Dayton, OR?

Based on 1 user-submitted tests, the average radon level is 6.00 pCi/L.

Q: What EPA Radon Zone is Dayton in?

Dayton is in Yamhill County, EPA Zone 2.

Q: How much does radon mitigation cost in Dayton?

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

Avg: 6.00 pCi/L

Yamhill County

EPA Zone 2

1 user test

Nestled in Yamhill County within Oregon's Willamette Valley, Dayton shows radon levels of 6.0 pCi/L, which exceeds the EPA action threshold. The area's volcanic soils and underlying Columbia River basalt formations, combined with the Portland Metro region's mix of basement and crawl space foundations, contribute to elevated radon potential. Professional testing and mitigation are recommended for homes throughout this wine country community.

6.00

pCi/L average

Above EPA Action Level

Based on 1 user-submitted radon test for homes in Dayton, OR. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Dayton, OR Radon Mitigation

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

Dayton, OR Radon Testing

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

Dayton, Oregon Radon Levels

User-submitted radon test readings from homes in the Dayton area.

Radon Level	City	Home Age	Foundation	Submitted
6 pCi/L	Dayton, OR	51-99 Years	Partial Basement	Aug 2025

Have a radon test result for Dayton? Submit your reading to help other homeowners.

Dayton Radon Facts

Key details about the radon risk profile for Dayton and the 97114 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Yamhill County, OR

Zip Code

97114

Predicted Screening Level

2–4 pCi/L (Zone 2)

Avg. User Submitted Level

6.00 pCi/L

User Tests Submitted

Dayton and the 97114 zip code are located in Yamhill 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 Dayton, OR

What is the average radon level in Dayton, OR?

Based on 1 user-submitted test, the average radon level in Dayton is 6.00 pCi/L. This exceeds the EPA's recommended action level of 4.0 pCi/L, and radon testing is recommended for all homes in the area.

What EPA Radon Zone is Dayton in?

Dayton and the 97114 zip code are in Yamhill 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 Dayton?

Radon mitigation in Dayton 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 Dayton?

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