Water Quality in San Jose, CA (93252)

EPA violation data for public water systems serving ZIP code 93252.

No Health-Based Violations

None of the 23 water systems serving this ZIP have exceeded federal contaminant limits in the past 5 years. There are3 monitoring/reporting violations (missed testing deadlines), all resolved.

Better than 43% of US ZIP codes.

Based on EPA compliance data. Not a substitute for an official water quality report from your utility.

1,295

Population

23

Water Systems

3

Violations (5yr)

0

Health-Based

Location

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Water Systems Serving This Area (23)

Cws - Bakersfield

Surface water 267,881 people served
0 violations
Lead tested: 2.8 ppb (limit: 15 ppb)

Oxnard Water Dept

Purchased surface water 200,232 people served
0 violations
Lead tested: 2.2 ppb (limit: 15 ppb)

Bakersfield, City Of

Purchased surface water 160,144 people served
0 violations
Lead tested: 1.3 ppb (limit: 15 ppb)

Ventura Water Department

Surface water 113,500 people served
0 violations

City Of Santa Maria Utilities Department

Purchased surface water 109,477 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb)

City Of Santa Barbara Water Department

Surface water 98,872 people served
0 violations

Ventura Wwd No. 8 - Simi Valley

All resolved
Purchased surface water 94,738 people served
1 violation (5yr) · All resolved
Lead tested: 0 ppb (limit: 15 ppb)

Goleta Water District

Surface water 84,462 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb)

Cal American Water Co

All resolved
Purchased surface water 66,809 people served
1 violation (5yr) · All resolved
Lead tested: 3 ppb (limit: 15 ppb)

City Of Thousand Oaks Water Department

Purchased surface water 53,157 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb)

Santa Margarita Recreation Area

Groundwater 50,001 people served
0 violations

San Luis Obispo Water Department

Surface water 47,788 people served
0 violations

Camarillo Water Dept

Purchased surface water 46,824 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb)

Golden State Water Company - Simi Valley

Purchased surface water 45,128 people served
0 violations

Lompoc-City Water Utility Div

Surface water 40,473 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb)

Ventura Cwwd No. 1 - Moorpark

Purchased surface water 35,514 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb)

Golden State Water Company - Orcutt

All resolved
Purchased surface water 34,102 people served
1 violation (5yr) · All resolved

City Of Paso Robles Water Division

Surface water 31,176 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb)

Atascadero Mutual Water Co

Groundwater 30,618 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb)

Half Way Station Cafe

Groundwater 100 people served
0 violations

Sagebrush Annie'S Restaurant

Groundwater 50 people served
0 violations

Ventucopa

Groundwater 36 people served
0 violations

Santa Barbara Pistachio Company

Groundwater 29 people served
0 violations

Contaminants Found

NitrateMonitoring

At high levels, nitrate can cause blue baby syndrome in infants.

2 violations
All resolved
Revised Total Coliform RuleMonitoring

Missed testing deadlines — not a detection of bacteria.

1 violation
All resolved

Lead & Copper Levels

Lead (Pb)

Within limit
0 ppb measured Action level: 15 ppb

Sampled: Jan 2025

How Does This Compare?

San Jose (93252) has more violations than 43% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 3, most of which are monitoring/reporting issues.

Fewer violations 43th percentile More violations

Water Filter Recommendations

No contaminant issues detected. For general protection, a basic carbon filter removes common impurities like chlorine and sediment. Look for NSF/ANSI 42 certified products.

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