Sunnyvale has multiple water providers: Sunnyvale Water and Cal Water Los Altos. This page provides information about Sunnyvale Water.

The Sunnyvale Water provides water for about 147,055 residents living in the Sunnyvale area. Established in 1850, the Sunnyvale Water collects water from three different sources of drinking water supply: (1) Hetch Hetchy surface water and treated water from the San Francisco Public Utilities Commission (SFPUC); (2) treated surface water from the Santa Clara Valley Water District (SCVWD); and (3) local groundwater from city-owned, operated and maintained six deep wells.

Sunnyvale City Drinking Water Quality

Consumer Confidence Water Quality Reports

Under the authority of the Safe Drinking Water Act, the EPA requires Sunnyvale Water and Sewer to assess local water quality each year and distribute a Consumer Confidence Water Quality Report. At WaterZen, we review these reports and make the information available, in a concise, straightforward, and easy-to-understand way.

Excellent

WaterZen Rating

Lead levels in the drinking water of some cities across the United States are too high, potentially creating public-health issues for the people living in those areas.

What about Sunnyvale Water? How much lead is in your drinking water? And how do those levels compare to other cities in the state? We examined data from hundreds of cities across the nation to understand and grade your water quality.

As you can see, Sunnyvale Water received the best-possible grade because the amounts of contaminants found in the water supply were better than the Public Health Goal and most other water providers we've analyzed.

Sunnyvale has multiple water providers: Sunnyvale Water and Cal Water Los Altos. This page provides water quality information for Sunnyvale Water.

Excellent

WaterZen Rating

Lead levels in the drinking water of some cities across the United States are too high, potentially creating public-health issues for the people living in those areas.

Sunnyvale has multiple water providers: Sunnyvale Water and Cal Water Los Altos. This page provides water quality information for Sunnyvale Water.

Contact Sunnyvale Water and Sewer Customer Service

Have a Question, Issue or Comment?

Main Customer Service

Physical Address:
P.O. Box 3707
Sunnyvale, California 94088

408-730-7400
No email provided

Emergency (24 hours - broken water main or pipeline, etc.)
408-730-7400

Pay Your Sunnyvale Water Bill

Already have an account?

If you already have an account, you just need to login to the Sunnyvale Water site. Sunnyvale Water accepts credit cards, debit, and direct deposit. Click here to login.

Want to create a new account?

You can create a new account on the Sunnyvale Water website. Once you create the account, you can setup payment with credit, debit, or direct deposit. Click here to create an account.

Want to pay without an account?

You can make a one-time payment without creating an account. You will need to have your credit or debit card in order to make the one time payment. Click here to make a one time payment.

How to Start Sunnyvale Water Service

Starting Your Service

When you move to a new home in Sunnyvale City, you'll most likely already have running water, but you'll still need to set up water service with the Sunnyvale Water. Luckily, Sunnyvale has made it pretty simple with the following online form. Starting service generally takes just two business days.

Click here to fill out a Start Service Form.

Stopping Your Service

When you move out of a home in Sunnyvale City, you'll need to stop your water service with the Sunnyvale Water, so you don't keep getting billed. Simply fill out the following online form. Stopping service normally takes just two business days.

Click here to fill out a Stop Service Form.

Latest Updates