Occidental, CA Radon Levels

Q: What is the average radon level in Occidental, CA?

Based on 1 user-submitted tests, the average radon level is 10.00 pCi/L.

Q: What EPA Radon Zone is Occidental in?

Occidental is in Sonoma County, EPA Zone 3.

Q: How much does radon mitigation cost in Occidental?

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

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

Occidental, CA Radon Facts

EPA Radon Zone Zone 3 — Low Risk < 2.0 pCi/L (Zone 3)

County Sonoma County, CA

Zip Code 95465

Avg. User Level 10.00 pCi/L

User Tests 1

Nestled in Sonoma County's coastal redwood region within the Santa Rosa Metro area, Occidental recorded a single test reading of 10.0 pCi/L, well above the EPA action level of 4.0 pCi/L. The area's complex geology of marine sediments and volcanic formations can create unexpected radon concentrations despite California's generally lower radon profile. With only limited testing data available for zip code 95465, more comprehensive measurement is needed to understand radon patterns in this forested community.

10.00

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

Occidental, CA Radon Mitigation

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Occidental, CA Radon Levels

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

Radon Level	City	Home Age	Foundation
10 pCi/L	Occidental, CA	0-20 Years	No Basement/All Slab

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Radon FAQ for Occidental, CA

What is the average radon level in Occidental, CA?

Based on 1 user-submitted test, the average radon level in Occidental is 10.00 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 Occidental in?

Occidental and the 95465 zip code are in Sonoma 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 Occidental?

Radon mitigation in Occidental 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 Occidental?

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 California

Cities in California with the most user-submitted radon test data, ranked by number of submissions.

City	Avg User Radon Level	Submissions
Los Angeles	7.83 pCi/L	6
Mammoth Lakes	10.80 pCi/L	5
San Jose	4.20 pCi/L	5
Rancho Palos Verdes	8.00 pCi/L	4
Bishop	6.25 pCi/L	4
Oakland	5.00 pCi/L	4
Woodland Hills	7.67 pCi/L	3
South Lake Tahoe	6.33 pCi/L	3
Palos Verdes Peninsula	6.00 pCi/L	3
Sacramento	4.33 pCi/L	3

Occidental, CA Radon Levels

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

Occidental, CA Radon Facts

Occidental, CA Radon Mitigation

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Occidental, CA Radon Levels

Radon FAQ for Occidental, CA

Most Active Radon Markets in California

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