Oakland
Is Oakland tap water safe to drink?
Mostly yes — Oakland scores 96/100. This report aggregates EPA drinking water data across 2 local systems in Oakland. We found 14 total violations (4 unresolved).
Real-Time Environment
Live: 11:45 AM☀️ No active precipitation. Rainfall can impact surface water turbidity and pollutant runoff in Oakland.
Water Quality Impact
🛡️ Home Water Treatment Needs
Should you invest in filtration or softening for your home in Oakland?
Expert Advice
Your water quality is excellent. Standard filtration is optional but can further enhance taste.
Buying a Filter?
Filtration technologies matched to Oakland contaminant records.
Baby Formula Safety
Guidance on preparing infant formula using municipal tap water in Oakland.
Homebuyer's Perspective
Municipal water quality in Oakland directly influences pipe corrosion rates and home filtration needs. The high safety score (96/100) suggests lower risk for plumbing corrosion and appliance scaling.
Health & Family Safety
Residents should monitor Lead (90th percentile) levels. Pregnant women and families with young children should consult the specific EPA health goals listed below.
View Health Risk Glossary →Compliance Record for Oakland
Based on EPA SDWIS violation records and contaminant test results for all water systems serving Oakland.
Frequently Asked Questions
Is Oakland tap water safe to drink?
Mostly yes — Oakland scores 96/100.
How many water systems serve Oakland?
Oakland is served by 2 public water systems in our latest EPA-backed dataset.
How can I check water quality for my exact address in Oakland?
Use the WaterQ search tool to look up your ZIP code and view nearby systems, contaminant levels, and recent violations for Oakland.
What is the water quality score for Oakland?
The water quality score for Oakland is 96 out of 100, based on EPA contaminant data, violation history, and testing results across the 2 systems serving the city.
What are the top contaminants in Oakland?
The top contaminants detected in Oakland include Lead (90th percentile). View detailed information on our contaminants page.
Oakland Water Quality Summary
Oakland, CA receives a water quality score of 96/100 (Grade A) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 2 public water systems serving the area.
Oakland'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.
Oakland's score of 96 is 7 points above the California state average of 89, and above the nationwide average of roughly 78/100 across all U.S. states.
For residents and prospective homebuyers in this large West Coast city, the local tap water consistently achieves excellent quality marks. Oakland relies on a pair of distinct water systems to serve its population, managing the complex environmental challenges of a major Californian urban center. Given the region's varied geology and proximity to Central Valley agricultural activity, maintaining such high standards represents a reassuring benefit for everyday households.
Water quality data is sourced from the U.S. EPA SDWIS database and updated quarterly. Learn about our scoring methodology → Read our California water quality rankings report →
Key Contaminants
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Water Systems Serving Oakland (2)
Check Your Specific Address
Water quality can vary by neighborhood in Oakland.
Related
Quick compare in California
Compare Oakland water quality: View all states · Contaminant library · How we score water quality