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La Grande, OR Radon Levels

Check local La Grande radon levels and find certified testing and mitigation professionals to keep your home safe


La Grande, OR Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)
County Union County, OR
Zip Code 97850
Avg. User Level 14.00 pCi/L
User Tests 2

Positioned in Union County within Oregon's Blue Mountains foothills, La Grande shows an average radon level of 10.67 pCi/L from recent testing. This concentration substantially exceeds the EPA's 4.0 pCi/L action threshold, likely due to the area's volcanic and sedimentary geology. The 97850 zip code's mix of older homes with basements and newer construction warrants comprehensive radon testing and professional mitigation where needed.

14.00
pCi/L average
Above EPA Action Level

Based on 2 user-submitted radon tests for homes in La Grande, OR. The EPA recommends taking action at or above 4.0 pCi/L.

0
4.0 EPA
10+

La Grande, OR Radon Mitigation

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

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La Grande, OR Radon Levels

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

Radon LevelCityHome AgeFoundation
20 pCi/L La Grande, OR 51-99 Years
8 pCi/L La Grande, OR 51-99 Years Full Basement
4 pCi/L LA GRANDE, OR 51-99 Years

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

Radon FAQ for La Grande, OR

What is the average radon level in La Grande, OR?
Based on 2 user-submitted tests, the average radon level in La Grande is 14.00 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 La Grande in?
La Grande and the 97850 zip code are in Union 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 La Grande?
Radon mitigation in La Grande 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 La Grande?
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 in Oregon with the most user-submitted radon test data, ranked by number of submissions.

CityAvg User Radon LevelSubmissions
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