Water Quality in Modesto, CA (95329)
EPA violation data for public water systems serving ZIP code 95329.
Active Health Violations
2 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 60% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
2,954
Population
9
Water Systems
7
Violations (5yr)
2
Health-Based
Location
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Water Systems Serving This Area (9)
Modesto, City Of
Turlock, City Of
Ceres, City Of
1 health-basedLake Don Pedro Csd
1 health-basedDon Pedro Rec Ag:Flem.Meadows
All resolvedTurlock Lake State Park
Don Pedro Rec Ag:Blue Oaks
Lake Don Pedro Homeowners
Golden Hills Mobile Home And Rv Park
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
Copper (Cu)
Exceeds limitSampled: Jan 2024
How Does This Compare?
Modesto (95329) has more violations than 60% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 7.
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.
Reverse Osmosis System
Highly effective at removing heavy metals, dissolved solids, and a wide range of contaminants. Recommended for homes with lead or arsenic concerns.
Targets:Lead, Copper, Arsenic, Mercury, Cadmium
Look for:NSF/ANSI 58 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.