Water Quality in Modesto, CA (95358)
EPA violation data for public water systems serving ZIP code 95358.
Active Health Violations
35 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 85% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
30,469
Population
37
Water Systems
44
Violations (5yr)
35
Health-Based
Location
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Water Systems Serving This Area (37)
Modesto, City Of
Turlock, City Of
Ceres, City Of
1 health-basedHillsview Homes
All resolvedHart- Ransom Union School & District
Woodward Reservoir Water System
Buena Vista Migrant Center
All resolvedParadise School
Old German Baptist Church
Dunkard Brethren Church
Shiloh School District
12 health-basedRatto Bros, Inc
1 health-basedMotel Seven Water System
Wood Colony Christian School
1 health-basedGrover Landscaping Inc
Country Western Mhrv
Brethren Heritage School, Inc
1 health-basedModesto Disposal Service-(Water)
United Pallet Services Inc Water System
Storer Transportation
10 health-basedShiloh-Paradise Baseball For Youth
9 health-basedLa Grange Park-Ohv
Joe'S Food Mart Water System
Cal 76
Las Palmas Fishing Access -Stanislaus
Old Corner Bar & Grill
Basso Bridge Fishing/Boating Access
4937 Beckwith Water System
Smart Stop Food Mart (Eh)
Vfw Post 3199
Kelly'S Chuck Wagon
Camp Peaceful Pines
Marty'S Inn Water System
Modesto Reservoir
Fisher Nut
City Of Oakdale Treatment Plant
Exact Corp
Contaminants Found
At high levels, nitrate can cause blue baby syndrome in infants.
A naturally occurring element that can cause cancer and other health effects at high levels.
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
Missed testing deadlines — not a detection of bacteria.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jan 2025
How Does This Compare?
Modesto (95358) has more violations than 85% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 44.
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.