Fresno
Is Fresno tap water safe to drink?
Mostly yes — Fresno scores 90/100. This report aggregates EPA drinking water data across 1 local system in Fresno. We found 0 total violations (0 unresolved).
Real-Time Environment
Live: 01:30 PM☀️ No active precipitation. Rainfall can impact surface water turbidity and pollutant runoff in Fresno.
Water Quality Impact
🛡️ Home Water Treatment Needs
Should you invest in filtration or softening for your home in Fresno?
Expert Advice
Your water quality is excellent. Standard filtration is optional but can further enhance taste.
Buying a Filter?
Filter or no filter for Fresno water? Here's what the data says.
Baby Formula Safety
What new parents in Fresno should know about tap water safety.
Homebuyer's Perspective
Water quality is easy to overlook when evaluating a move to Fresno, but it can affect plumbing longevity and appliance lifespan. The high safety score (90/100) 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 →Compliance Record for Fresno
Based on EPA SDWIS violation records and contaminant test results for all water systems serving Fresno.
Frequently Asked Questions
Is Fresno tap water safe to drink?
Mostly yes — Fresno scores 90/100.
How many water systems serve Fresno?
Fresno is served by 1 public water system in our latest EPA-backed dataset.
How can I check water quality for my exact address in Fresno?
Use the WaterQ search tool to look up your ZIP code and view nearby systems, contaminant levels, and recent violations for Fresno.
What is the water quality score for Fresno?
The water quality score for Fresno is 90 out of 100, based on EPA contaminant data, violation history, and testing results for all serving water systems.
What are the top contaminants in Fresno?
The top contaminants detected in Fresno include Nitrate, Chloramine, Gross Alpha Particle Activity. View detailed information on our contaminants page.
Fresno Water Quality Summary
Fresno, CA receives a water quality score of 90/100 (Grade A) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 12 public water systems serving the area.
Fresno'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.
Fresno's score of 90 matches the California state average, and above the nationwide average of roughly 78/100 across all U.S. states.
For homebuyers looking at this large California city, Fresno's tap water performs exceptionally well, delivering top-tier quality across its multiple distinct water systems. Managing water safety for a major West Coast urban center in the Central Valley requires navigating both agricultural surroundings and complex geology. Despite these regional environmental factors, local households can feel confident in the highly rated, clean drinking water delivered to their taps.
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 Fresno (1)
Check Your Specific Address
Water quality can vary by neighborhood in Fresno.
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