Water Quality in San Jose, CA (93274)
EPA violation data for public water systems serving ZIP code 93274.
Active Health Violations
75 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 96% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
80,026
Population
64
Water Systems
99
Violations (5yr)
75
Health-Based
Location
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Water Systems Serving This Area (64)
Cws - Visalia
Tulare, City Of
Porterville, City Of
1 health-basedHanford, City Of
1 health-basedLemoore, City Of
13 health-basedCorcoran, City Of
Lemoore Naval Air Station
Avenal, City Of
5 health-basedWoodville Public Utility Dist
7 health-basedTulare Western High School
Sundale Union School
Liberty Elementary School
Oak Valley School
All resolvedAlice G Mulcahy Jr High School
Palo Verde Union Elementary School
Pratt Mutual Water Co
Tulco Water Co
Tulare Union High School
Preet Market
Sun Pacific - Tulare
Lds Church Atwater
Lds Church Merced
Buena Vista Elementary School
All resolvedWaukena Elementary School
27 health-basedLactalis Heritage Dairy
9 health-basedAccelerated Charter High School
1 health-basedAuberry Lds Church
Saputo Dairy Food Usa
Laspina Mutual Water
Fat Nat S
Vip Catering
Tulare District Hospital
Tulare Sales Yard
Church Of Jesus Christ Of Lds
Sallee Water System
Waukena Market
1 health-basedEastgate Water Co
Park Ave Water Co Number Two
Park Avenue Water Company
Lone Oak Mutual Water Co.
Tulare Union High School-Farm
Lds Church Mariposa
Five Hi Club
Garden Inn
Silva S Water System
Ali Mutual Water Co
Hodges Water Co
Coelho Meat Co.
Soults Pump & Equipment Company
Quintero Labor Camp
Mom S Motel
Pacheo Water System
Fraternal Order Of Eagles
Jentern Enterprises
Stanleys Food Mart
Bravo Farms Traver
10 health-basedJohn Hovannisian
Tulare City Wwtp
West Pine Water System
Central Cal Tristeza Erad
Tulare County Wc Tract No. 381
Tulare County Wc Tract No. 366
Tulare County Wc Tract No. 345
Tulare County Wc Tracts 344 & 380
Contaminants Found
At high levels, nitrate can cause blue baby syndrome in infants.
A naturally occurring element that can cause cancer and other health effects at high levels.
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
Missed testing deadlines — not a detection of bacteria.
Annual water quality report delivery requirement.
Lead & Copper Levels
Lead (Pb)
Approaching limitSampled: Jan 2025
Copper (Cu)
Exceeds limitSampled: Jan 2022
How Does This Compare?
San Jose (93274) has more violations than 96% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 99.
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
Activated Carbon Filter
Excellent for removing chlorine, chloramine, and disinfection byproducts like THMs and HAAs. Available as pitcher filters, countertop, or under-sink units.
Targets:THMs, HAAs, Chlorine, Chloramine, Taste & Odor
Look for:NSF/ANSI 42 & 53 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.