Water Quality in San Jose, CA (93527)
EPA violation data for public water systems serving ZIP code 93527.
Active Health Violations
3 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.
1,831
Population
37
Water Systems
19
Violations (5yr)
3
Health-Based
Location
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Water Systems Serving This Area (37)
Cws - Bakersfield
Bakersfield, City Of
Cws - Visalia
Tulare, City Of
Porterville, City Of
1 health-basedBishop Creek Chevron
Inyokern Csd
1 health-basedCoso Junction Ranch Store
Brady S Mini Mart- Inactive
China Lake Acres Mutual Water Company
Gateway Market Water System
Louisiana Pacific Mill
Sierra Breeze Mutual Water Company
No Name Water System
East Inyokern Mutual Water
Usfs-Horse Meadow Campground
Usfs-Fish Creek Campground
Owens Peak West
West Valley Mutual Water Company
Irelan S
Sweet Water Co-Op
Indian Wells Lodge
All resolved148 East Water System
1 health-basedLife Water Co-Op
Usfs - Havilah Work Center
Grumpy Bears Retreat
All resolvedUsfs/Pinehurst Work Center
Usfs-Peppermint Work Center
Usfs - Fulton Work Center
South Desert Mutual Water Company
Kennedy Meadows General Store
All resolvedDel Sol Water Co-Op
Wilcox Water System
Usfs-Troy Meadow Campground
Sandy'S Oasis Mobilehome Park
Northeast Leliter Co-Op
El Solana Trailer Park
Contaminants Found
Missed testing deadlines — not a detection of bacteria.
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
At high levels, nitrate can cause blue baby syndrome in infants.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jan 2025
How Does This Compare?
San Jose (93527) has more violations than 77% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 19.
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
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.