Water Quality in San Jose, CA (95033)
EPA violation data for public water systems serving ZIP code 95033.
Active Health Violations
5 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 72% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
9,600
Population
25
Water Systems
13
Violations (5yr)
5
Health-Based
Location
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Water Systems Serving This Area (25)
San Jose Water
1 health-basedCity Of Sunnyvale
City Of Santa Clara
Great Oaks Wc Inc
City Of San Jose - Evg/Edv/Coy
Santa Cruz Water Department
City Of Milpitas
All resolvedCity Of Mountain View
Cwsc Los Altos Suburban
City Of Palo Alto
Watsonville, City Of
Soquel Creek Water District
San Lorenzo Valley Water Dist
1 health-basedLoma Prieta Jusd-Loma Prieta School
Coyote Valley Rv Resort
Las Cumbres Mutual Water Co
Nestldown Ranch
Ridge Mutual Water Company
1 health-basedLake Canyon Mutual Water Company
1 health-basedLakeside Sd-Lakeside School
All resolvedVista Grande Water Users Association
Brush And Old Well Mutual Water Company
1 health-basedLaurel Community League
Mountain Springs Mutual Water Company
David Bruce Winery
All resolvedContaminants Found
Missed testing deadlines — not a detection of bacteria.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jul 2025
Copper (Cu)
Exceeds limitSampled: Jul 2025
How Does This Compare?
San Jose (95033) has more violations than 72% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 13.
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.