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
| Contaminant | Level Detected | EPA Limit | % of Limit | Status |
|---|---|---|---|---|
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
ResolvedAbout 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.
View all California cities →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.