Tap Water Quality in San Francisco, California (ZIP 94102)
Serving San Francisco, California
Is the Tap Water Safe in San Francisco, California?
Tap water in San Francisco, California (ZIP 94102) has 2 contaminants above EPA health-based guidelines (MCLGs) in at least one of the 1 city served. We recommend reviewing detailed city reports below and considering a certified water filter for additional protection.
ZIP 94102 is served by 5 water utilities providing water to San Francisco. Water quality varies by utility and city. Click on the cities below to see detailed reports for your specific area.
Water Quality Report for ZIP 94102
2 contaminants above EPA health guidelines
These levels represent the worst case across all cities in this ZIP code. Check individual city reports for specific details.
Found in San Francisco
Found in San Francisco
Water Utilities Serving ZIP 94102
SFPUC CITY DISTRIBUTION DIVISION
884,363
Water Source:
Surface water purchased
Contaminants Tested:
185
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Best Water Filters for San Francisco (ZIP 94102)
Based on the contaminants found in your area, we recommend NSF-certified water filters that can remove the specific contaminants above health guidelines.
Frequently Asked Questions about San Francisco Tap Water
Is the tap water safe in San Francisco, California (ZIP 94102)?
Which water utilities serve ZIP code 94102?
How do I pay my water bill in San Francisco (ZIP 94102)?
What contaminants are in San Francisco water (ZIP 94102)?
Should I use a water filter in San Francisco (ZIP 94102)?
What cities are in ZIP code 94102?
How we built this page
Water-quality data on this page comes from public federal and state records for the 5 utilityies serving ZIP 94102. We refresh each utility's record whenever its underlying source publishes new data.
- Contaminants & violations: EPA Safe Drinking Water Information System (SDWIS) plus the Unregulated Contaminant Monitoring Rule (UCMR-5) for PFAS and emerging contaminants.
- Annual reports: the most recent published Consumer Confidence Report (CCR) from each utility serving this ZIP, where available.
- Service area & contact: EPA SDWIS plus the California Department of Environmental Protection / Drinking Water program.
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