Tap Water Quality in San Jose, California (ZIP 95131)
Serving San Jose, California
Is the Tap Water Safe in San Jose, California?
Tap water in San Jose, California (ZIP 95131) has 5 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 95131 is served by 5 water utilities providing water to San Jose. Water quality varies by utility and city. Click on the cities below to see detailed reports for your specific area.
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Water Quality Report for ZIP 95131
3 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 Jose
Found in San Jose
Found in San Jose
Water Utilities Serving ZIP 95131
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Best Water Filters for San Jose (ZIP 95131)
Based on the contaminants found in your area, we recommend NSF-certified water filters that can remove the specific contaminants above health guidelines.
Find a filter certified for your water
Browse third-party-certified filters by the contaminant you care about — each list shows exactly which NSF/ANSI standard backs the claim, no marketing spin.
Browse filters by contaminantFrequently Asked Questions about San Jose Tap Water
Is the tap water safe in San Jose, California (ZIP 95131)?
Which water utilities serve ZIP code 95131?
How do I pay my water bill in San Jose (ZIP 95131)?
What contaminants are in San Jose water (ZIP 95131)?
Should I use a water filter in San Jose (ZIP 95131)?
What cities are in ZIP code 95131?
How we built this page
Water-quality data on this page comes from public federal and state records for the 5 utilityies serving ZIP 95131. 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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