Belmont, CA Radon Mitigation and Testing
Perched in San Mateo County within the San Francisco Metro area, Belmont's hillside location features complex geology that can create pockets of elevated radon despite California's generally lower levels. Recent testing in zip code 94002 shows an average reading of 20.0 pCi/L, which significantly exceeds the EPA action level of 4.0 pCi/L. Homeowners should test their properties and consider mitigation systems, as the area's sloped terrain and varied foundation types can create unpredictable radon patterns.
Based on 1 user-submitted radon test for homes in Belmont, CA. The EPA recommends taking action at or above 4.0 pCi/L.
Belmont, CA Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
Belmont, CA Radon Testing
Finding qualified radon testing professionals is the first step toward protecting your home.
Belmont, California Radon Levels
User-submitted radon test readings from homes in the Belmont area.
| Radon Level | City | Home Age | Foundation | Submitted |
|---|---|---|---|---|
| 20 pCi/L | Belmont, CA | 51-99 Years | Partial Basement | Oct 2021 |
Have a radon test result for Belmont? Submit your reading to help other homeowners.
Belmont Radon Facts
Key details about the radon risk profile for Belmont and the 94002 zip code area.
Belmont and the 94002 zip code are located in San Mateo 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 Belmont, CA
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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 |