Water Quality in Madera, CA (93638)
EPA violation data for public water systems serving ZIP code 93638.
Active Health Violations
3 health-based violations found in the past 5 years, with at least one still unresolved. Contaminant levels have exceeded federal safety limits. Consider testing your tap water independently.
More violations than 73% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
50,571
Population
30
Water Systems
14
Violations (5yr)
3
Health-Based
Location
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Water Systems Serving This Area (30)
City Of Madera
Madera Valley Water Company
Valley Children'S Hospital
All resolvedLiberty High School
Etaa Facilities Llc
Webster School
Studios 6 Suites
All resolvedPacific Agrilands Inc-Berenda Ranch
Baltimore Aircoiil Company
Sierra View School
Calbee America Incorporated
Extra Mart
Arco Am/Pm #82211
Madera Ranchos Assembly Of God
All resolvedNott-Hill Investment Corp (Water)
Table Mt Chevron
All resolvedAzteca Milling Lp Valley Grain
Abc Labs California
Ikg Industries
Almaden - Madera
Tlcf/New Beginning School
Christian'S Merryland Cafe
Sc Corner (Water Only)
All resolvedSix Star Tackle Box Too
Seaboard Energy California, Llc
Talley Transportation Inc
3 health-basedVintage House Nut Company
Specialty Crop Co
George'S River Ranch
Franzia Winery-Sanger
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)
Within limitSampled: Jan 2025
How Does This Compare?
Madera (93638) has more violations than 73% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 14.
Recommended Water Filters
Based on health-based violations detected in your area, these filter types are commonly used to address similar contaminants. Consult your water utility's Consumer Confidence Report for the most current data.
Whole House Carbon Filter
A solid baseline for improving overall water quality. Reduces chlorine, sediment, and many common contaminants throughout your entire home.
Targets:Chlorine, Sediment, Taste & Odor
Look for:NSF/ANSI 42 certified
Always look for filters certified by NSF International for the specific contaminants you want to remove. This is general educational information, not an endorsement of any specific product.