Skip to main content
💧 TapWaterData
Home/Utilities/California/CALIFORNIA WATER SERVICE - SAN CARLOS

CALIFORNIA WATER SERVICE - SAN CARLOS

Serving 3 cities in CA

Monitor
2 above health guidelines
35K
People Served
3
Cities
1
Water Sources
0
MCL Violations

Official CALIFORNIA WATER SERVICE - SAN CARLOS Resources

CALIFORNIA WATER SERVICE - SAN CARLOS Service Area

Loading map...

Service Area

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

CALIFORNIA WATER SERVICE - SAN CARLOS Water Quality Grade

B
Good

Water quality is good with minor concerns.

Quality Score80/100
2
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 - SAN CARLOS Water Safe to Drink?

CALIFORNIA WATER SERVICE - SAN CARLOS has reported 2 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 35,453 people across 3 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 - SAN CARLOS Service Area

CALIFORNIA WATER SERVICE - SAN CARLOS Contact & Information

Mailing Address

1720 NORTH FIRST STREET San Jose, CA 95112

Water Sources & Treatment

Water Sources

Surface water purchased

Treatment Methods

Not specified

Disinfectant Used

chloramines

CALIFORNIA WATER SERVICE - SAN CARLOS 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 - SAN CARLOS

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

Stay Informed About Your Water Quality

Get EPA reports, filter recommendations, and safety alerts for your area.

Join 10,000+ people protecting their families. Unsubscribe anytime.