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CITY OF SUNNYVALE

Serving 1 city in CA

Action Needed
14 above health guidelines
156K
People Served
1
City
1
Water Sources
0
MCL Violations

Official CITY OF SUNNYVALE Resources

CITY OF SUNNYVALE Service Area

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Service Area

This map shows the approximate service area for CITY OF SUNNYVALE. Actual coverage may vary. Contact the utility directly to confirm service availability at your address.

CITY OF SUNNYVALE Water Quality Grade

F
Failing

Significant water quality issues. Filter recommended.

Quality Score0/100
14
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 CITY OF SUNNYVALE Water Safe to Drink?

CITY OF SUNNYVALE has reported 14 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 155,567 people across 1 city 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.

CITY OF SUNNYVALE Service Area

CITY OF SUNNYVALE Contact & Information

Emergency Line

408-736-6244

24/7 After-Hours

Mailing Address

P.O. BOX 3707 Sunnyvale, CA 94088

Water Sources & Treatment

Water Sources

Surface water purchased

Treatment Methods

conventionalfiltrationpre-oxidation with chlorine

Disinfectant Used

chloramines, hypochlorite, uv light

CITY OF SUNNYVALE 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 CITY OF SUNNYVALE

Based on water quality data from cities served by CITY OF SUNNYVALE, we recommend NSF-certified filters that can remove contaminants above health guidelines.

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