Fresno, California Water Quality Report

Comprehensive analysis of tap water safety based on EPA data

Last updated: January 2026

Is Fresno's Water Safe to Drink?

Generally Safe. Fresno's tap water meets EPA standards for drinking water quality. The water scored 94/100 in our analysis.

Contaminants Found in Fresno's Water

1 contaminants tested • Data from EPA SDWIS database

ContaminantLevel DetectedEPA Limit% of LimitStatus
Lead
0 mg/L
0.015 mg/L
0.0%
Safe

Compliance Violations

Past EPA violations recorded for Fresno's water system

monitoring

Arsenic - 1/1/2016

Resolved

About Fresno's Water System

CITY OF FRESNO

PWS ID:
CA1010007
Population Served:
545,716
Water Source:
surface
A94/100

Fresno Water Quality Score

Based on EPA contaminant data and compliance records

100
Contaminants
90
Compliance
85
Infrastructure

Positive Findings

  • Excellent overall water quality
  • No violations in the past 3 years
  • No health-based (MCL) violations
  • All tested contaminants well below EPA limits

Protect Your Family's Water

Even with good water quality, many families choose to filter their water for extra peace of mind.

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Other Cities in California

Compare water quality with nearby cities.

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Frequently Asked Questions

Where does Fresno's water come from?
Fresno primarily uses surface water sources.
How often is Fresno's water tested?
Water utilities are required to test for contaminants regularly and report results to the EPA.
Should I use a water filter in Fresno?
While the water meets EPA standards, many families choose filters for extra peace of mind.