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

The City of Cupertino Water, a public community water system under the /City/ Department of Public Works, provides water for about 16,530 residents living in the area of Cupertino, a city in Santa Clara County, California. Established in 1955, the City of Cupertino Water System currently obtains its supply from surface water sources, primarily Santa Clara Valley Water District (SCVWD) Imported Surface Water. SCVWD uses water from the Sacramento-San Joaquin River Delta. Often called “imported water”, it is brought into the City through the complex infrastructure of the State Water Project, the federal Central Valley Project and San Francisco’s Hetch Hetchy system.

Cupertino Drinking Water Quality

Consumer Confidence Water Quality Reports

Under the authority of the Safe Drinking Water Act, the EPA requires City Of Cupertino Water 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 Cupertino 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, Cupertino 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.

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

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

Contact City Of Cupertino Water Customer Service

Have a Question, Issue or Comment?

Main Customer Service

Physical Address:
1251 South Bascom Avenue
San Jose, California 95128

408-279-7900
customer.service@sjwater.com

Emergency (24 hours - broken water main or pipeline, etc.)
408-279-7900

Pay Your Cupertino Water Bill

Already have an account?

If you already have an account, you just need to login to the Cupertino Water site. Cupertino 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 Cupertino 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 Cupertino Water Service

Starting Your Service

When you move to a new home in Cupertino, you'll most likely already have running water, but you'll still need to set up water service with the Cupertino Water. Luckily, Cupertino 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 Cupertino, you'll need to stop your water service with the Cupertino 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.

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