Monmouth, OR Radon Mitigation and Testing

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

Based on 1 user-submitted tests, the average radon level is 1.00 pCi/L.

Q: What EPA Radon Zone is Monmouth in?

Monmouth is in Polk County, EPA Zone 3.

Q: How much does radon mitigation cost in Monmouth?

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

Avg: 1.00 pCi/L

Polk County

EPA Zone 3

1 user test

Monmouth in Polk County reports an average radon level of 1.0 pCi/L, well within EPA recommended ranges but still warranting periodic testing for homeowner peace of mind. Located in Oregon's Willamette Valley as part of the Salem metro area, the community sits on alluvial soils and sedimentary formations that typically produce lower radon concentrations. However, individual homes in the 97361 zip code may still experience elevated levels due to localized soil conditions or structural factors.

1.00

pCi/L average

Below EPA Action Level

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

4.0 EPA

10+

Monmouth, OR Radon Mitigation

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

Monmouth, OR Radon Testing

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

Monmouth, Oregon Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
1 pCi/L	Monmouth, OR	51-99 Years	No Basement/All Crawl Space	Feb 2023

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

Monmouth Radon Facts

Key details about the radon risk profile for Monmouth and the 97361 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Polk County, OR

Zip Code

97361

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Avg. User Submitted Level

1.00 pCi/L

User Tests Submitted

Monmouth and the 97361 zip code are located in Polk 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 Monmouth, OR

What is the average radon level in Monmouth, OR?

Based on 1 user-submitted test, the average radon level in Monmouth is 1.00 pCi/L. This is below the EPA's recommended action level of 4.0 pCi/L. However, we recommend all homes be tested regardless of your neighbor's results.

What EPA Radon Zone is Monmouth in?

Monmouth and the 97361 zip code are in Polk 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 Monmouth?

Radon mitigation in Monmouth 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 Monmouth?

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