Occidental, CA Radon Mitigation and Testing

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.

Avg: 10.00 pCi/L

Sonoma County

EPA Zone 3

1 user test

Occidental is located in Sonoma County, California. With 1 user-submitted readings averaging 10.00 pCi/L, the area exceeds the EPA's 4.0 pCi/L action threshold, and testing is strongly recommended for homeowners in the 95465 zip code.

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

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

Occidental, CA Radon Testing

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

Occidental, California Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
10 pCi/L	Occidental, CA	0-20 Years	No Basement/All Slab	Oct 2017

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

Occidental Radon Facts

Key details about the radon risk profile for Occidental and the 95465 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Sonoma County, CA

Zip Code

95465

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Avg. User Submitted Level

10.00 pCi/L

User Tests Submitted

Occidental and the 95465 zip code are located in Sonoma 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 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 with the most user-submitted radon test data in the state.

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
Woodland Hills	7.67 pCi/L	3
South Lake Tahoe	6.33 pCi/L	3
Palos Verdes Peninsula	6.00 pCi/L	3
Bishop	5.67 pCi/L	3
Sacramento	4.33 pCi/L	3
Oakland	3.33 pCi/L	3
Fresno	10.00 pCi/L	2
Davis	8.00 pCi/L	2
Palo Alto	6.50 pCi/L	2
Studio City	6.50 pCi/L	2
Menlo Park	5.00 pCi/L	2
Truckee	5.00 pCi/L	2
Walnut Creek	4.00 pCi/L	2
San Diego	3.50 pCi/L	2
San Francisco	3.50 pCi/L	2
Belmont	20.00 pCi/L	1