Los Alamitos, CA Radon Mitigation and Testing

Q: What EPA Radon Zone is Los Alamitos in?

Los Alamitos is in Orange County, EPA Zone 3.

Q: How much does radon mitigation cost in Los Alamitos?

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

Orange County

EPA Zone 3

Located in Orange County within the Los Angeles Metro, Los Alamitos at zip code 90720 sits on Southern California's coastal plain where radon levels are typically lower. Testing data is currently unavailable for this community, though California's geology generally produces lower radon concentrations than many other states. Homeowners should still consider testing, particularly in homes with unusual construction features or those built on fill soils.

Los Alamitos, CA Radon Mitigation

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

Los Alamitos, CA Radon Testing

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

Los Alamitos Radon Facts

Key details about the radon risk profile for Los Alamitos and the 90720 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Orange County, CA

Zip Code

90720

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Los Alamitos and the 90720 zip code are located in Orange 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 Los Alamitos, CA

What EPA Radon Zone is Los Alamitos in?

Los Alamitos and the 90720 zip code are in Orange 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 Los Alamitos?

Radon mitigation in Los Alamitos 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 Los Alamitos?

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