Selma, CA Radon Mitigation and Testing

Q: What EPA Radon Zone is Selma in?

Selma is in Fresno County, EPA Zone 2.

Q: How much does radon mitigation cost in Selma?

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

Fresno County

EPA Zone 2

Located in Fresno County within California's Central Valley, Selma sits over deep alluvial deposits that typically produce low radon levels throughout the region. Testing data for the 93662 zip code in the Fresno Metro area remains limited, though the valley's geology generally results in minimal radon risk. Most residential construction features slab-on-grade foundations suitable for the area's stable soil conditions and mild climate.

Selma, CA Radon Mitigation

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

Selma, CA Radon Testing

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

Selma Radon Facts

Key details about the radon risk profile for Selma and the 93662 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Fresno County, CA

Zip Code

93662

Predicted Screening Level

2–4 pCi/L (Zone 2)

Selma and the 93662 zip code are located in Fresno 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 Selma, CA

What EPA Radon Zone is Selma in?

Selma and the 93662 zip code are in Fresno 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 Selma?

Radon mitigation in Selma 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 Selma?

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