PlainEnviro

CITY OF SUNNYVALE

PWSID: CA4310014 · Sunnyvale, CA · Serves 157,566 people

Health Violations

CITY OF SUNNYVALE has 6 health-based violations out of 6 total. Health violations indicate contaminant levels exceeded EPA limits or required treatment was not followed.

Population Served
157,566
Total Violations
6
Health Violations
6
Source Type
Surface Water

CITY OF SUNNYVALE (PWSID CA4310014) is a cws water system drawing from a surface water source, regulated by the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act. It serves approximately 157,566 people in Sunnyvale, CA, and is subject to primacy enforcement by the California drinking-water program.

The system's federal compliance record contains 6 total violations, with 6 classified as health-based (MCL exceedances or treatment-technique failures). 1 distinct contaminant has been cited, including Arsenic. Recorded violations span 1995–2015.

A historical violation does not necessarily describe current water quality, systems must notify customers and remediate, and monitoring-type violations often reflect reporting lapses rather than contamination. The most authoritative real-time source is the utility's annual Consumer Confidence Report. For enforcement history and corrective-action orders, consult EPA ECHO and the California state drinking-water program's public portal.

System Details

EPA ID (PWSID)
CA4310014
System Type
CWS
Water Source
Surface Water
Location
Sunnyvale, CA
Population Served
157,566
Health Violations
Yes (6)

What contaminants are in this water system?

Contaminant Violations Health-Based
Arsenic 6 6

Violation History (6)

Contaminant Health Date
Arsenic Yes Mar 1, 2015
Arsenic Yes Mar 1, 2015
Arsenic Yes Mar 1, 2015
Arsenic Yes Mar 1, 1995
Arsenic Yes Mar 1, 1995
Arsenic Yes Mar 1, 1995

Frequently Asked Questions

Is CITY OF SUNNYVALE water safe to drink?
CITY OF SUNNYVALE has 6 health-based violations out of 6 total. Health violations indicate contaminant levels exceeded EPA limits or required treatment was not followed. The system uses surface water water as its source.
How many people does CITY OF SUNNYVALE serve?
CITY OF SUNNYVALE serves 157,566 people in Sunnyvale, CA. It is classified as a CWS water system.
What violations does CITY OF SUNNYVALE have?
CITY OF SUNNYVALE has 6 total violations on record spanning 1995–2015. 6 are health-based violations involving contaminants exceeding EPA limits.
What contaminants have been found in CITY OF SUNNYVALE water?
Violations have been recorded for 1 contaminant. The most frequent: Arsenic.

Explore More

California Water Systems → All States → Contaminants →

About This Data

Water system data is from the EPA Safe Drinking Water Information System (SDWIS). Health-based violations include Maximum Contaminant Level (MCL) and Treatment Technique (TT) violations that may pose a direct risk to public health. Violation records may span multiple years.

Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services U.S. Environmental Protection Agency, SDWIS Federal Reporting Services

Read our methodology - how this data is sourced, computed, and verified.

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