Hayward
Is Hayward tap water safe to drink?
Mostly yes — Hayward scores 88/100. This report aggregates EPA drinking water data across 1 local system in Hayward. We found 6 total violations (6 unresolved).
Real-Time Environment
Live: 03:45 PM☀️ No active precipitation. Rainfall can impact surface water turbidity and pollutant runoff in Hayward.
Water Quality Impact
🛡️ Home Water Treatment Needs
Should you invest in filtration or softening for your home in Hayward?
Expert Advice
Your water quality is excellent. Standard filtration is optional but can further enhance taste.
Buying a Filter?
Wondering if Hayward tap water needs filtering? We break it down.
Baby Formula Safety
Mixing baby formula with Hayward tap water? Read this first.
Homebuyer's Perspective
If you're house-hunting in Hayward, water quality belongs on your due-diligence checklist alongside schools and crime data. The high safety score (88/100) 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 Hayward
Based on EPA SDWIS violation records and contaminant test results for all water systems serving Hayward.
Frequently Asked Questions
Is Hayward tap water safe to drink?
Mostly yes — Hayward scores 88/100.
How many water systems serve Hayward?
Hayward is served by 1 public water system in our latest EPA-backed dataset.
How can I check water quality for my exact address in Hayward?
Use the WaterQ search tool to look up your ZIP code and view nearby systems, contaminant levels, and recent violations for Hayward.
What is the water quality score for Hayward?
The water quality score for Hayward is 88 out of 100, based on EPA contaminant data, violation history, and testing results across the 1 system serving the city.
What are the top contaminants in Hayward?
The top contaminants detected in Hayward include Lead (90th percentile). View detailed information on our contaminants page.
Hayward Water Quality Summary
Hayward, CA receives a water quality score of 88/100 (Grade B) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 1 public water system serving the area.
Hayward'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.
Hayward's score of 88 is 1 point below the California state average of 89, and above the nationwide average of roughly 78/100 across all U.S. states.
Homeowners and prospective buyers in Hayward, California can feel reassured by the solid, favorable rating achieved by the city's single water system. Serving this mid-size city, the utility operates within a West Coast regional context defined by varied geology, large urban centers, and Central Valley agriculture. This positive score indicates that local households receive reliable tap water that holds up well against the area's diverse environmental influences.
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
Get notified if Hayward's water quality changes
Free email alert when the EPA reports a new violation or boil-water advisory for your water system. No spam — just the alerts you asked for.
By subscribing you agree to receive occasional water-quality alert emails. Unsubscribe anytime. See our Privacy Policy.
Water Systems Serving Hayward (1)
Check Your Specific Address
Water quality can vary by neighborhood in Hayward.
Related
Quick compare in California
Compare Hayward water quality: View all states · Contaminant library · How we score water quality