San Jose has multiple water providers: CalWater - Bakersfield, California Water Service - Dominguez, CalWater (California Water Service) - Visalia, California Water Service - San Mateo, Great Oaks Water, San Jose Water (Edenvale & Coyote Valley), California Water Service, City Of San Jose Water - North San Jose/Alviso, Cal Water - City Of King, California Water Service - Marysville, Cal Water - Oroville, CalWater - Dixon, CalWater - Willows, CalWater - Travis Air Force Base, and Calwater - Salinas Hills, view all. This page provides information about Great Oaks Water.

The Great Oaks Water provides water for about 99,199 residents living in the San Jose area. Established in 1960, the Oaks Water collects ground water from 20 wells located throughout the service area, pumped from very pristine aquifers underlying the Santa Clara Plain and Coyote Valley.

San Jose Drinking Water Quality

Consumer Confidence Water Quality Reports

Under the authority of the Safe Drinking Water Act, the EPA requires Oaks Water Company 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.

A-

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 Great Oaks 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, Great Oaks 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.

A-

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.

Contact Oaks Water Company Customer Service

Have a Question, Issue or Comment?

Main Customer Service

Physical Address:
20 Great Oaks Blvd. Suite 120
San Jose, California 95119

844-508-6489
tguster@greatoakswater.com

Emergency (24 hours - broken water main or pipeline, etc.)
408-879-8246

Pay Your Great Oaks Water Bill

Already have an account?

If you already have an account, you just need to login to the Great Oaks Water site. Great Oaks 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 Great Oaks 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 San Jose Water Service

Starting Your Service

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