Water Quality in San Jose, CA (95020)
EPA violation data for public water systems serving ZIP code 95020.
Active Health Violations
4 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 73% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
67,181
Population
56
Water Systems
14
Violations (5yr)
4
Health-Based
Location
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Water Systems Serving This Area (56)
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
City Of Gilroy
1 health-basedThe Courtyard Water System
Gavilan Joint Community College District
Christopher Ranch L.L.C.
Gilroy Usd-Rucker School
Gilroy Foods, Gilroy West Plant
California Canners & Growers
Gilroy Foods, Gilroy East Plant
New Avenue Mutual Water Company
Anchorpoint Christian School
All resolvedFarmers Labor Exchange
Coyote Valley Golf Center
Goldsmith Seeds, Inc.
Z Best Products
J B Martini
Steve Morrow Pres
Golden Heights Mutual Water Company
Burchell Road Water Association
Los Ranchos De Uvas Water Company
1 health-basedQuail Creek Estates Mutual Water Company
Simonsen Laboratories Inc
Deep Hole Water Assoc
Old Gilroy Service Station
Hecker Pass-A Family Adventure
Learning Services Corp.
Countryside Mushrooms Inc
Valley View Ranches
Emerald Valley Mutual Water Company
All resolvedAngelo Lane Water Company
Terry Lynn Water System
Tri-Cal Incorporated
All resolvedReforestation Technologies International
1 health-basedRancho Vista Water
Alamo Farms Mutual Water Co
Garlic Country Golf, Inc.
All resolvedLa Cantinita
Travel Inn
Pinocchio'S Pizza & Restaurant
Bella Vista Water Company
Harden Farms Labor Camp
Rucker Avenue Mutual Water Co
Fortino Winery
Drift Inn
Fernandez Water System
Orchard Acres
Old Gilroy Service Station
Rapazzini Winery Water System
Contaminants Found
At high levels, nitrate can cause blue baby syndrome in infants.
Missed testing deadlines — not a detection of bacteria.
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 (95020) has more violations than 73% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 14.
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.