Apple Valley, CA Radon Mitigation and Testing

Q: What EPA Radon Zone is Apple Valley in?

Apple Valley is in San Bernardino County, EPA Zone 2.

Q: How much does radon mitigation cost in Apple Valley?

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

Located in the high desert of San Bernardino County, Apple Valley sits within the Riverside metro area in EPA Zone 2 with desert alluvium and granite bedrock that can produce variable radon levels. Testing data remains limited for zip codes 92307 and 92308, making individual home testing important for residents. The area's elevation and desert climate, combined with predominantly slab-on-grade construction, typically result in lower radon concentrations than found in other geological settings.

Apple Valley, CA Radon Mitigation

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

Apple Valley, CA Radon Testing

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

Apple Valley Radon Facts

Key details about the radon risk profile for Apple Valley and the 92307 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

San Bernardino County, CA

Zip Code

92307

Predicted Screening Level

2–4 pCi/L (Zone 2)

Apple Valley and the 92307 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 Apple Valley, CA

What EPA Radon Zone is Apple Valley in?

Apple Valley and the 92307 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 Apple Valley?

Radon mitigation in Apple Valley 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 Apple Valley?

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