The Diablo Water District, a self-governing local public agency under the County Water District Law of California, provides water for about 36,014 residents living in the Oakley area. Established in 1953, the Diablo Water District’s primary water source is surface water from the Sacramento-San Joaquin River Delta, through the City’s water provider, the Contra Costa Water District. Contra Costa Water District diverts water from four locations in the Delta: Rock Slough near Oakley, Old River near Discovery Bay, Middle River on Victoria Island, and Mallard Slough in Bay Point.

Oakley Drinking Water Quality

Consumer Confidence Water Quality Reports

Under the authority of the Safe Drinking Water Act, the EPA requires Diablo Water District 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 Diablo Water Department? 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, Diablo Water Department 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.

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 Diablo Water District Customer Service

Have a Question, Issue or Comment?

Main Customer Service

Physical Address:
PO Box 127
Oakley, California 94561

925-625-3798
customers@diablowater.org

Emergency (24 hours - broken water main or pipeline, etc.)
925-625-3798

Pay Your Diablo Water Department Bill

Already have an account?

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

Starting Your Service

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