Walnut Creek, CA Radon Mitigation and Testing
Situated in Contra Costa County within the San Francisco Bay Area (ZIP 94595), Walnut Creek has recorded an average radon level of 4.0 pCi/L based on limited testing data. While this reading sits right at the EPA's action threshold, it suggests that radon testing remains important for homeowners throughout the area. The community's location in the East Bay hills, with their complex geological formations and varied soil conditions, can produce inconsistent radon levels from home to home.
Based on 3 user-submitted radon tests for homes in Walnut Creek, CA. The EPA recommends taking action at or above 4.0 pCi/L.
Walnut Creek, CA Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
Walnut Creek, CA Radon Testing
Finding qualified radon testing professionals is the first step toward protecting your home.
Walnut Creek, California Radon Levels
User-submitted radon test readings from homes in the Walnut Creek area.
| Radon Level | City | Home Age | Foundation | Submitted |
|---|---|---|---|---|
| 4 pCi/L | Walnut Creek, CA | 51-99 Years | No Basement/All Crawl Space | Dec 2020 |
Have a radon test result for Walnut Creek? Submit your reading to help other homeowners.
Walnut Creek Radon Facts
Key details about the radon risk profile for Walnut Creek and the 94595 zip code area.
Walnut Creek and the 94595 zip code are located in Contra Costa 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 Walnut Creek, 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 |