North Fork, CA Radon Mitigation and Testing
High in the Sierra Nevada foothills of Madera County, North Fork's mountainous terrain within the Fresno Metro area features granite bedrock that can contribute to radon gas production. Testing data from zip code 93643 reveals an average radon level of 7.0 pCi/L, significantly exceeding the EPA action level. The community's mountain homes, often featuring crawl spaces or basement areas, require careful radon monitoring given the elevated readings observed in this scenic but geologically active region.
Based on 1 user-submitted radon test for homes in North Fork, CA. The EPA recommends taking action at or above 4.0 pCi/L.
North Fork, CA Radon Mitigation
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North Fork, CA Radon Testing
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North Fork, California Radon Levels
User-submitted radon test readings from homes in the North Fork area.
| Radon Level | City | Home Age | Foundation | Submitted |
|---|---|---|---|---|
| 7 pCi/L | North Fork, CA | 21-50 Years | No Basement/All Crawl Space | Nov 2019 |
Have a radon test result for North Fork? Submit your reading to help other homeowners.
North Fork Radon Facts
Key details about the radon risk profile for North Fork and the 93643 zip code area.
North Fork and the 93643 zip code are located in Madera 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 North Fork, 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 |