Ojai, CA Radon Mitigation and Testing

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

Based on 1 user-submitted tests, the average radon level is 5.00 pCi/L.

Q: What EPA Radon Zone is Ojai in?

Ojai is in Ventura County, EPA Zone 1.

Q: How much does radon mitigation cost in Ojai?

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

Avg: 5.00 pCi/L

Ventura County

EPA Zone 1

1 user test

Nestled in Ventura County's mountain valley within the Oxnard Metro area, Ojai sits on sedimentary formations that can produce variable radon levels despite California's generally lower radon risk. Current testing data shows an average radon level of 5.0 pCi/L in zip code 93023, which exceeds the EPA action level. This elevated reading demonstrates that even California communities can have significant radon exposure, making testing essential for all Ojai residents.

5.00

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

Ojai, CA Radon Mitigation

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

Ojai, CA Radon Testing

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

Ojai, California Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
5 pCi/L	Ojai, CA	21-50 Years	No Basement/All Slab	Aug 2016

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

Ojai Radon Facts

Key details about the radon risk profile for Ojai and the 93023 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Ventura County, CA

Zip Code

93023

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Avg. User Submitted Level

5.00 pCi/L

User Tests Submitted

Ojai and the 93023 zip code are located in Ventura County, which has an EPA assigned Radon Zone of 1. A radon zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Ojai, CA

What is the average radon level in Ojai, CA?

Based on 1 user-submitted test, the average radon level in Ojai is 5.00 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 Ojai in?

Ojai and the 93023 zip code are in Ventura County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.

How much does radon mitigation cost in Ojai?

Radon mitigation in Ojai 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 Ojai?

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