Cima, CA Radon Mitigation and Testing

Q: What EPA Radon Zone is Cima in?

Cima is in San Bernardino County, EPA Zone 2.

Q: How much does radon mitigation cost in Cima?

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

San Bernardino County

EPA Zone 2

Positioned in remote San Bernardino County at ZIP code 92323, Cima sits in the Mojave Desert where sparse development and arid conditions typically result in lower radon concentrations. Desert soils and granite-based geology generally produce minimal radon, though individual properties may still vary. Testing data remains limited for this sparsely populated area, making individual home testing the best approach for residents.

Cima, CA Radon Mitigation

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

Cima, CA Radon Testing

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

Cima Radon Facts

Key details about the radon risk profile for Cima and the 92323 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

San Bernardino County, CA

Zip Code

92323

Predicted Screening Level

2–4 pCi/L (Zone 2)

Cima and the 92323 zip code are located in San Bernardino County, which has an EPA assigned Radon Zone of 2. A radon zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Cima, CA

What EPA Radon Zone is Cima in?

Cima and the 92323 zip code are in San Bernardino 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 Cima?

Radon mitigation in Cima 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 Cima?

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