Water Quality in San Jose, CA (93927)
EPA violation data for public water systems serving ZIP code 93927.
Active Health Violations
14 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 77% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
21,574
Population
18
Water Systems
18
Violations (5yr)
14
Health-Based
Location
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Water Systems Serving This Area (18)
Cwsc Salinas
Cal Am Water Company - Monterey
Alco Water Service
Marina Coast Water District
Greenfield, City Of
Oak Avenue School
Sunpile Foods
Sensient Dehydrated**Closed**
Arroyo Center Wc
Mercado Camp Water System
Oak Ave Elementary School
Apple Ave Ws #02
1 health-basedApple Ave Ws #03
13 health-basedOak Park Ws
Pine St Ws #01
Johnson S Enco Service Station
Exxon Station
L A Hearne Warehouse
Contaminants Found
At high levels, nitrate can cause blue baby syndrome in infants.
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 (93927) has more violations than 77% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 18.
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.