San Jose
Is San Jose tap water safe to drink?
Mostly yes — San Jose scores 96/100. This report aggregates EPA drinking water data across 1 local system in San Jose. We found 0 total violations (0 unresolved).
Real-Time Environment
Live: 02:45 PM☀️ No active precipitation. Rainfall can impact surface water turbidity and pollutant runoff in San Jose.
Water Quality Impact
🛡️ Home Water Treatment Needs
Should you invest in filtration or softening for your home in San Jose?
Expert Advice
Your water quality is excellent. Standard filtration is optional but can further enhance taste.
Buying a Filter?
Should you buy a water purifier in San Jose? See our analysis.
Baby Formula Safety
Is San Jose tap water safe for infants? Critical safety guide.
Homebuyer's Perspective
For those looking to relocate to San Jose, water quality is a key factor in long-term property maintenance. The high safety score (96/100) suggests lower risk for plumbing corrosion and appliance scaling.
Health & Family Safety
Residents should monitor Nitrate levels. Pregnant women and families with young children should consult the specific EPA health goals listed below.
View Health Risk Glossary →Score Breakdown for San Jose
*Scores are calculated using weighted EPA monitoring data from the past 5 years.
Frequently Asked Questions
Is San Jose tap water safe to drink?
Mostly yes — San Jose scores 96/100.
How many water systems serve San Jose?
San Jose is served by 1 public water system in our latest EPA-backed dataset.
How can I check water quality for my exact address in San Jose?
Use the WaterQ search tool to look up your ZIP code and view nearby systems, contaminant levels, and recent violations for San Jose.
What is the water quality score for San Jose?
The water quality score for San Jose is N/A out of 100, based on EPA contaminant data, violation history, and testing results for all serving water systems.
What are the top contaminants in San Jose?
The top contaminants detected in San Jose include Nitrate, Turbidity, PFAS (Per- and Polyfluoroalkyl Substances). View detailed information on our contaminants page.
San Jose Water Quality Summary
San Jose, CA receives a water quality score of 96/100 (Grade A) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 44 public water systems serving the area.
San Jose's water quality is above the national average, with strong compliance records and low contaminant levels. Residents generally receive clean, safe tap water that meets EPA standards.
Water quality data is sourced from the U.S. EPA SDWIS database and updated quarterly. Learn about our scoring methodology →
Key Contaminants
Water Systems Serving San Jose (1)
Check Your Specific Address
Water quality can vary by neighborhood in San Jose.
Related
Quick compare in California
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