Water Quality in San Jose, CA (93270)
EPA violation data for public water systems serving ZIP code 93270.
Active Health Violations
9 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 76% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
5,482
Population
15
Water Systems
17
Violations (5yr)
9
Health-Based
Location
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Water Systems Serving This Area (15)
Cws - Visalia
Tulare, City Of
Porterville, City Of
1 health-basedTerra Bella Irrigation District - Tbt
All resolvedR E D E Water System
Bell Academy
Deer Creek Rv Park
Porterville Citrus Rayo
1 health-basedSaucelito Elementary School
7 health-basedElmco West Camp
Brenda Exprees
All resolvedCowpunchers Fountain Springs
Emco Poplar Camp
Elmco Vinyards Cameo
Terra Bella Irrigation Dist
Contaminants Found
At high levels, nitrate can cause blue baby syndrome in infants.
Missed testing deadlines — not a detection of bacteria.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jan 2023
How Does This Compare?
San Jose (93270) has more violations than 76% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 17.
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.