Water Quality in San Jose, CA (93271)
EPA violation data for public water systems serving ZIP code 93271.
Active Health Violations
13 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 86% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
2,199
Population
77
Water Systems
36
Violations (5yr)
13
Health-Based
Location
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Water Systems Serving This Area (77)
Cws - Visalia
Tulare, City Of
Porterville, City Of
1 health-basedNps-Grant Grove
Nps-Wolverton
Nps-Ash Mountain
Nps-Pinewood Water System
Nps-Sheep Creek
Nps-Dorst Cg
Snp-Crescent Meadow
North Kaweah Mutual Water Company
South Kaweah Mutual Water Company
9 health-basedSouth Fork Estates
Nps-Buckeye Flat
Open Country Swap Meet
Horizon Nut Llc
Nps-Crystal Cave Pk Lot
Snp-Crystal Cave
Sierra King Homeowners Assn
Autocamp Sequoia
Nps-Cold Springs
The Bull
Nps-Hospital Rock
Nps-Potwisha
Improvement District No. 1
River View Restaurant
Three Rivers Elementary School
1 health-basedLower Springs Water Co
Gateway Restaurant & Lodge
Three Rivers Hideaway
All resolvedSt Anthony Retreat Center
Park Investments Water System
Lazy J Ranch Motel
All resolvedSouth Fork Estates Mutual Water Co
The Buckaroo
Kaweah General Store
Dey Memorial Foundation
The Hummingbird Cafe
Sequoia Rv Ranch
Nps-Atwell Mill
Deer Meadow Mutual Water Company
1 health-basedThe Indian Water System
Sequoia Cider Mill Restaurant
All resolvedHill Haven Motel
Corky'S On The River
Three Rivers Chevron
Sierra Lodge
South Kaweah Mutual
Three Rivers Lions Club
Three Rivers Golf & Spirits, Inc.
River Wharf
East Three Rivers Mutual Water Corp
1 health-basedQuesadilla Gorilla
River Retreat Mutual Water Company
Mr Gerald Avants
Sequoia Np-Lost Grove
Buckeye Tree Lodge
Nps-Lodgepole
Sequoia National Pk-Southfork
Village Apartments
Tract 403 Mutual Water Co
Cencal Investment
Sequoia Village Inn
Sequoia National Park-Bearpaw
Three Rivers Historical Museum
Sequoia Village
Bullene Vineyards
Harvan S Riverside Restaurant
Ol' Buckaroo
Angelinas
Barby S
Western Holiday Lodge
The Indian Water System
Rumor S
Lake Elowin Resort
Three Rivers Fire Station
Army Corps Of Engineers
Contaminants Found
A naturally occurring element that can cause cancer and other health effects at high levels.
At high levels, nitrate can cause blue baby syndrome in infants.
Missed testing deadlines — not a detection of bacteria.
Annual water quality report delivery requirement.
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
Lead & Copper Levels
Lead (Pb)
Approaching limitSampled: Jan 2025
Copper (Cu)
Exceeds limitSampled: Jan 2023
How Does This Compare?
San Jose (93271) has more violations than 86% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 36.
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.