Water Quality in San Jose, CA (95070)
EPA violation data for public water systems serving ZIP code 95070.
Past Health-Based Violations
2 health-based violations were found in the past 5 years, meaning contaminant levels exceeded federal safety limits. All have since been resolved. There are also 2 monitoring/reporting violations.
More violations than 48% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
31,417
Population
23
Water Systems
4
Violations (5yr)
2
Health-Based
Location
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Water Systems Serving This Area (23)
San Jose Water
1 health-basedCity Of Sunnyvale
City Of Santa Clara
Great Oaks Wc Inc
City Of San Jose - Evg/Edv/Coy
City Of Milpitas
All resolvedCity Of Mountain View
Cwsc Los Altos Suburban
City Of Palo Alto
Camp Stuart
Villa Montalvo
Paul Masson Chateau
Camp Saratoga
Saratoga Springs, Inc.
Mt. Eden Mutual Water Company
Arrowhead Cooperative Company
Oak Dell Park
Santa Clara County Peace
Alpine Inn & Spa
1 health-basedLos Altos Rod And Gun Club
Maria Lane Mutual Water Company
Saratoga Retirement Community
Peninsula Recreation Inc
Contaminants Found
Missed testing deadlines — not a detection of bacteria.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jul 2025
How Does This Compare?
San Jose (95070) 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.
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.
UV Water Purifier
Uses ultraviolet light to neutralize bacteria, viruses, and parasites without chemicals. Ideal for homes with microbial contamination concerns.
Targets:E. coli, Coliform, Giardia, Cryptosporidium
Look for:NSF/ANSI 55 (Class A) 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.