Water Quality in San Jose, CA (95076)
EPA violation data for public water systems serving ZIP code 95076.
Active Health Violations
44 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 94% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
82,806
Population
106
Water Systems
81
Violations (5yr)
44
Health-Based
Location
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Water Systems Serving This Area (106)
San Jose Water
1 health-based Surface water 1,039,920 people served
1 violation (5yr)
· 1 health-based · All resolved
Lead tested: 0 ppb (limit: 15 ppb) ✓
City Of Sunnyvale
Purchased surface water 157,566 people served
0 violations
City Of Santa Clara
Purchased surface water 130,746 people served
0 violations
Cwsc Salinas
Groundwater 123,679 people served
0 violations
Lead tested: 1 ppb (limit: 15 ppb) ✓
Great Oaks Wc Inc
Groundwater 110,088 people served
0 violations
City Of San Jose - Evg/Edv/Coy
Purchased surface water 101,265 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb) ✓
Santa Cruz Water Department
Surface water 94,626 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb) ✓
Cal Am Water Company - Monterey
Groundwater under influence of surface water 92,450 people served
0 violations
Lead tested: 2 ppb (limit: 15 ppb) ✓
City Of Milpitas
All resolved Purchased surface water 81,773 people served
2 violations (5yr)
· All resolved
City Of Mountain View
Purchased surface water 81,501 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb) ✓
Cwsc Los Altos Suburban
Purchased surface water 69,973 people served
0 violations
Lead tested: 1.5 ppb (limit: 15 ppb) ✓
City Of Palo Alto
Purchased surface water 67,231 people served
0 violations
Watsonville, City Of
Surface water 65,231 people served
0 violations
Alco Water Service
Groundwater 56,253 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb) ✓
Soquel Creek Water District
Purchased surface water 40,809 people served
0 violations
Lead tested: 1.6 ppb (limit: 15 ppb) ✓
Marina Coast Water District
Groundwater 38,377 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb) ✓
San Lorenzo Valley Water Dist
1 health-based Surface water 21,145 people served
2 violations (5yr)
· 1 health-based
Psmcsd - Pajaro
Groundwater 6,500 people served
0 violations
Lead tested: 1.2 ppb (limit: 15 ppb) ✓
Aptos High School
1 health-based Groundwater 1,348 people served
2 violations (5yr)
· 1 health-based
Lead tested: 5 ppb (limit: 15 ppb) ✓
Monte Vista Christian School
Groundwater 1,051 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb) ✓
Psmcsd - Normco
Groundwater 928 people served
0 violations
Lead tested: 3 ppb (limit: 15 ppb) ✓
Psmcsd - Sunny Mesa
Groundwater 880 people served
0 violations
Lead tested: 1.3 ppb (limit: 15 ppb) ✓
Yosemite View Lodge
Groundwater 750 people served
0 violations
Alianza Charter School/Wcsa
1 health-based Groundwater 670 people served
3 violations (5yr)
· 1 health-based
Lead tested: 4 ppb (limit: 15 ppb) ✓
Cedar Lodge Resort
Groundwater 656 people served
0 violations
Cdfw Elkhorn Slough Ecological Reserve
All resolved Groundwater 650 people served
2 violations (5yr)
· All resolved
Monterey Mushrooms - Maher Crt
Groundwater 554 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb) ✓
Santa Cruz County Fairgrounds
2 health-based Groundwater 550 people served
6 violations (5yr)
· 2 health-based
Lead tested: 0 ppb (limit: 15 ppb) ✓
Psmcsd - Moss Landing Harbor Ws
Groundwater 520 people served
0 violations
Lead tested: 1.2 ppb (limit: 15 ppb) ✓
Psmcsd - Vega Rd Ws #01
Groundwater 438 people served
0 violations
Lead tested: 1.2 ppb (limit: 15 ppb) ✓
Monterey Bay Academy
All resolved Groundwater 400 people served
3 violations (5yr)
· All resolved
Lead tested: 1.4 ppb (limit: 15 ppb) ✓
San Andreas Mutual Water Co
Groundwater 378 people served
0 violations
Lead tested: 1.8 ppb (limit: 15 ppb) ✓
Gizdich Home Ranch
Groundwater 213 people served
0 violations
Rancho San Andreas
Groundwater 200 people served
0 violations
Thonotosassa Rd Fwh
1 health-based Groundwater 200 people served
2 violations (5yr)
· 1 health-based
Woodstalk
Groundwater 200 people served
0 violations
Psmcsd - Springfield Ws
15 health-based Groundwater 200 people served
15 violations (5yr)
· 15 health-based · All resolved
Lead tested: 0 ppb (limit: 15 ppb) ✓ Copper tested: 1430 ppb (limit: 1300 ppb)
Sunset Beach Mutual Water Co
Purchased surface water 182 people served
0 violations
Lead tested: 1.4 ppb (limit: 15 ppb) ✓
Mount Madonna Center
All resolved Groundwater 170 people served
1 violation (5yr)
· All resolved
Koinonia Conference Grounds
Groundwater 166 people served
0 violations
Renaissance High School
1 health-based Groundwater 166 people served
2 violations (5yr)
· 1 health-based
Lead tested: 0 ppb (limit: 15 ppb) ✓
Psmcsd - Vierra Estates Ws
3 health-based Groundwater 164 people served
3 violations (5yr)
· 3 health-based · All resolved
Lead tested: 8.9 ppb (limit: 15 ppb) ✓
Sill Road Water System #1
Groundwater 150 people served
0 violations
Jardines Del Valle
1 health-based Groundwater 130 people served
1 violation (5yr)
· 1 health-based · All resolved
Crestwood Heights Water Assn
Groundwater 126 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb) ✓
Santa Cruz Koa Campgrounds
Groundwater 110 people served
0 violations
Salinas Road Water System #2
Groundwater 100 people served
0 violations
San Miguel Ws #01
Groundwater 100 people served
1 violation (5yr)
Lead tested: 0 ppb (limit: 15 ppb) ✓
Mt Madonna Inn Restaurant
Groundwater 100 people served
0 violations
Reiter Berry Water System
11 health-based Groundwater 96 people served
18 violations (5yr)
· 11 health-based
Rancho Corralitos
All resolved Groundwater 87 people served
1 violation (5yr)
· All resolved
Lead tested: 0 ppb (limit: 15 ppb) ✓
Psmcsd - Langley/Valle Pacifico Ws
Groundwater 81 people served
0 violations
Lead tested: 1 ppb (limit: 15 ppb) ✓
Camp Loma
Surface water 80 people served
0 violations
Strawberry Rd Ws #06
Groundwater 78 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb) ✓
Manzanita Hills Wa
Groundwater 75 people served
0 violations
Spring Hills Golf Course
All resolved Groundwater 62 people served
2 violations (5yr)
· All resolved
Lewis Road Water System #4
Groundwater 62 people served
0 violations
Elkhorn Rd Ws #04
Groundwater 60 people served
0 violations
Lead tested: 5 ppb (limit: 15 ppb) ✓
Royal Oak Place Ws
Groundwater 60 people served
0 violations
Psmcsd - Blackie Rd Ws
Groundwater 60 people served
0 violations
Lead tested: 2.3 ppb (limit: 15 ppb) ✓ Copper tested: 1385 ppb (limit: 1300 ppb)
Delany Wc
Groundwater 60 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb) ✓
Chetmoore Acres Wa
Groundwater 59 people served
0 violations
Vajrayana Foundation
All resolved Groundwater 56 people served
1 violation (5yr)
· All resolved
Elevate Addiction Services
All resolved Groundwater 55 people served
2 violations (5yr)
· All resolved
Allan Lane Water Association
Groundwater 54 people served
0 violations
Apricot Ln Ws
Groundwater 53 people served
0 violations
Aptos Ridge Mutual Water Co
Groundwater 52 people served
0 violations
Venture Valley Water System
Groundwater 50 people served
0 violations
Bayview Mushroom Water System
Groundwater 50 people served
0 violations
Kitayama Brothers
2 health-based Groundwater 50 people served
3 violations (5yr)
· 2 health-based
Lead tested: 3.7 ppb (limit: 15 ppb) ✓
Salinas Road Water System #7
Groundwater 50 people served
0 violations
Baumann Rd Ws #01
Groundwater 48 people served
0 violations
R A Farms
1 health-based Groundwater 48 people served
2 violations (5yr)
· 1 health-based
Lead tested: 0 ppb (limit: 15 ppb) ✓
Maher Rd Ws #05
Groundwater 48 people served
0 violations
San Miguel Ws #03
Purchased groundwater 45 people served
0 violations
Lakeview Apartments
1 health-based Groundwater 43 people served
3 violations (5yr)
· 1 health-based
Lead tested: 0 ppb (limit: 15 ppb) ✓
Smith Road Mutual Water Co
Groundwater 40 people served
0 violations
La Selva Beach Greenhouses Inc
Groundwater 40 people served
0 violations
Rod Mclellen Inc
Groundwater 40 people served
0 violations
John Whitney
Groundwater 40 people served
0 violations
Mr. Doyle Ford
Groundwater 39 people served
0 violations
El Rancho Motel
Groundwater 35 people served
0 violations
Royal Oaks Market Ws
Groundwater 33 people served
0 violations
Aptos Hills Mutual Water Co
1 health-based Groundwater 32 people served
1 violation (5yr)
· 1 health-based · All resolved
Lead tested: 0 ppb (limit: 15 ppb) ✓
Savages Trading Post
Groundwater 30 people served
0 violations
Nakashima Nursery
Groundwater 30 people served
0 violations
Allen Lane Mutual Water Co
Groundwater 30 people served
0 violations
Cassin Ranch (Driscoll'S)
Groundwater 30 people served
0 violations
Mccahon Floral Ws
1 health-based Groundwater 29 people served
2 violations (5yr)
· 1 health-based
West Marine
Groundwater 27 people served
0 violations
Salinas Road Water System #3
Groundwater 25 people served
0 violations
H Yamashita Nursery
Groundwater 25 people served
0 violations
Yoshida Farms
Groundwater 25 people served
0 violations
Salinas Road Water System #6
Groundwater 25 people served
0 violations
Elkhorn Slough South Water
Groundwater 25 people served
0 violations
Okamoto Nursery
Groundwater 25 people served
0 violations
Nitao Nursery
Groundwater 25 people served
0 violations
Shiniamoto Nursery
Groundwater 25 people served
0 violations
Yoshida Nursery
Groundwater 25 people served
0 violations
I Yamashita
Groundwater 25 people served
0 violations
Monterey Mushrooms - Hall Rd
Groundwater 25 people served
0 violations
Maher Road Water System #2
Groundwater 25 people served
0 violations
Olson Tract Water Association
Groundwater 25 people served
0 violations
Salinas Road Water System #9
Groundwater 25 people served
0 violations
Trafton Road Water System #5
Groundwater 25 people served
0 violations
Royal Oaks Market Water System
Groundwater 8 people served
0 violations
Contaminants Found
NitrateHealth-Based
At high levels, nitrate can cause blue baby syndrome in infants.
27 violations
All resolved
LEAD AND COPPER RULE REVISIONSHealth-Based
20 violations
Has active
Revised Total Coliform RuleHealth-Based
Missed testing deadlines — not a detection of bacteria.
17 violations
Has active
Lead and Copper RuleHealth-Based
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
5 violations
Has active
ArsenicHealth-Based
A naturally occurring element that can cause cancer and other health effects at high levels.
3 violations
All resolved
Surface Water Treatment RuleHealth-Based
1 violation
All resolved
TTHMHealth-Based
1 violation
All resolved
E. COLIMonitoring
1 violation
Has active
Lead & Copper Levels
Lead (Pb)
Within limit2.3 ppb measured
Action level: 15 ppb
Sampled: Jul 2025
Copper (Cu)
Exceeds limit1385 ppb measured
Action level: 1300 ppb
Sampled: Jul 2025
How Does This Compare?
San Jose (95076) has more violations than 94% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 81.
Fewer violations 94th percentile More violations
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
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.