Water Quality in San Jose, CA (93277)
EPA violation data for public water systems serving ZIP code 93277.
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 90% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
53,985
Population
64
Water Systems
54
Violations (5yr)
35
Health-Based
Location
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Water Systems Serving This Area (64)
Cws - Visalia
Tulare, City Of
Porterville, City Of
1 health-basedRedwood High School
Mt Whitney High School
Golden West High School
Sunset Vista Water Company
Divisadero Jr High
Houston Ave Complex
Mt View School
Seville Water Company
1 health-basedMineral King School
Crestwood School
Royal Oaks School
Elbow Creek Elementary School
6 health-basedCos-Hanford Center
Golden West High School
Green Acres Middle School
Tract 92 C.S.D.
Houston School
East Orosi Community Services District
12 health-basedDelft Colony Water
All resolvedFairview School
Ivanhoe Elementary School
Linwood School
Crowley School
Willow Glen School
Yettem Water System
1 health-basedWillow Glen Mobile Estates
College Of Sequoias
Nationwide Insurance Co Water
Liberty School
Country Manor Mhp
Linwood Mutual Water Company
Mooney Grove Mobile Manor
Fairway Water Co
Tagus Packing House
Outside Creek School
All resolvedRed Rooster Inn Water System
Virmargo Water Company
Packwood School
3 health-basedOrange Blossom Junction
Tulare County
Eltra Corp.
Yokohl Mutual Water Co
7 health-basedFairway Water Co
Gas N Grab
3 health-basedHillman Health Center
Tulare County Road Yard 2/3
All resolvedCalifornia Division Of
Linda Loma Ranch
Industrial Park
Hartland Water Company
Tulare County
College Of Sequoias-Farm
Garden Plaza Water System
Mills Grove Water System
Murry Grant
Raibley Water System
Elbow School
1 health-basedFaria'S Ranch Market
Elk Bayou Park
Green Gold - Camp 4
Cws - Post/Mitts
Contaminants Found
At high levels, nitrate can cause blue baby syndrome in infants.
Missed testing deadlines — not a detection of bacteria.
Annual water quality report delivery requirement.
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jan 2025
How Does This Compare?
San Jose (93277) has more violations than 90% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 54.
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.