Water Quality in Modesto, CA (95322)

EPA violation data for public water systems serving ZIP code 95322.

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

9,506

Population

19

Water Systems

7

Violations (5yr)

3

Health-Based

Location

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Water Systems Serving This Area (19)

Modesto, City Of

Purchased surface water 218,771 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb)

City Of Merced

Groundwater 93,692 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb)

Turlock, City Of

Purchased surface water 72,682 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb)

Ceres, City Of

1 health-based
Purchased surface water 54,513 people served
2 violations (5yr) · 1 health-based

City Of Los Banos

1 health-based
Groundwater 47,419 people served
2 violations (5yr) · 1 health-based

City Of Atwater

Groundwater 29,479 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb)

City Of Gustine

1 health-based
Groundwater 6,110 people served
2 violations (5yr) · 1 health-based

Santa Nella County Water District

Surface water 2,211 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb)

Santa Nella County Water District

Surface water 615 people served
0 violations

Saputo Dairy Foods Usa, Llc

Groundwater 320 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb)

Dwr - San Luis Division O&M

Surface water 150 people served
0 violations

John B. Sanfilippo & Son, Inc.

Groundwater 120 people served
1 violation (5yr)
Lead tested: 0 ppb (limit: 15 ppb)

Fisherman'S Bend Mhp

Groundwater 120 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb)

Beacon Oil

Groundwater 100 people served
0 violations

Forebay Unocal Closed

Surface water 100 people served
0 violations

Hillview Packing-Gustine

Groundwater 33 people served
0 violations

San Joaquin Valley National Cemetery

Surface water 30 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb)

Duane'S Texaco

Groundwater 25 people served
0 violations

Santa Nella County

Groundwater 25 people served
0 violations

Contaminants Found

LEAD AND COPPER RULE REVISIONSHealth-Based
6 violations
Has active
Lead and Copper RuleMonitoring

Lead and copper testing requirement. Lead exposure can cause developmental harm in children.

1 violation
Has active

Lead & Copper Levels

Lead (Pb)

Within limit
0 ppb measured Action level: 15 ppb

Sampled: Jan 2025

How Does This Compare?

Modesto (95322) has more violations than 60% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 7.

Fewer violations 60th 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

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.

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