Water Quality in Fresno, CA (93723)
EPA violation data for public water systems serving ZIP code 93723.
No Health-Based Violations
None of the 10 water systems serving this ZIP have exceeded federal contaminant limits in the past 5 years. There are4 monitoring/reporting violations (missed testing deadlines), all resolved.
Better than 48% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
14,726
Population
10
Water Systems
4
Violations (5yr)
0
Health-Based
Location
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Water Systems Serving This Area (10)
City Of Fresno
City Of Clovis
Central High School West
Madison Elementary School
Roosevelt Elementary School
Houghton-Kearney School
Holland Park West
All resolvedMoravia Wines
Engelmann Cellars
Mercey Springs Shell
Contaminants Found
Missed testing deadlines — not a detection of bacteria.
At high levels, nitrate can cause blue baby syndrome in infants.
Lead & Copper Levels
Lead (Pb)
Approaching limitSampled: Jan 2025
How Does This Compare?
Fresno (93723) has more violations than 48% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 4, most of which are monitoring/reporting issues.
Water Filter Recommendations
No contaminant issues detected. For general protection, a basic carbon filter removes common impurities like chlorine and sediment. Look for NSF/ANSI 42 certified products.