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CALIFORNIA WATER SERVICE - STOCKTON

Serving 6 cities in CA

Action Needed
8 above health guidelines
175K
People Served
6
Cities
1
Water Sources
0
MCL Violations

Official CALIFORNIA WATER SERVICE - STOCKTON Resources

CALIFORNIA WATER SERVICE - STOCKTON Service Area

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Service Area

This map shows the approximate service area for CALIFORNIA WATER SERVICE - STOCKTON. Actual coverage may vary. Contact the utility directly to confirm service availability at your address.

CALIFORNIA WATER SERVICE - STOCKTON Water Quality Grade

F
Failing

Significant water quality issues. Filter recommended.

Quality Score20/100
8
Above Health Guidelines
0
EPA Violations

Grade is calculated based on contaminants exceeding health guidelines (MCLG) and EPA Maximum Contaminant Level violations. A = Excellent (90-100), B = Good (80-89), C = Fair (70-79), D = Poor (60-69), F = Failing (<60).

Is CALIFORNIA WATER SERVICE - STOCKTON Water Safe to Drink?

CALIFORNIA WATER SERVICE - STOCKTON has reported 8 contaminants above EPA health-based guidelines (MCLGs) in at least one city served. We recommend reviewing individual city reports below for specific water quality details.

This utility serves 174,507 people across 6 cities in CA. Water quality can vary by location within the service area. Check individual city pages below for detailed contaminant data specific to your area.

CALIFORNIA WATER SERVICE - STOCKTON Service Area

CALIFORNIA WATER SERVICE - STOCKTON Contact & Information

Mailing Address

1720 NORTH FIRST STREET San Jose, CA 95112

Water Sources & Treatment

Water Sources

Surface water purchased

Treatment Methods

disinfection

Disinfectant Used

hypochlorite

CALIFORNIA WATER SERVICE - STOCKTON Annual Water Quality Reports

2026 Water Quality Report
Latest Consumer Confidence Report (CCR)
View Report

Historical reports are being compiled. Check back soon for archived water quality data.

What is a CCR? The Consumer Confidence Report (CCR) is an annual water quality report that water utilities are required by the EPA to provide to customers. It contains information about your water source, detected contaminants, and compliance status.

Recommended Water Filters for CALIFORNIA WATER SERVICE - STOCKTON

Based on water quality data from cities served by CALIFORNIA WATER SERVICE - STOCKTON, we recommend NSF-certified filters that can remove contaminants above health guidelines.

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