New Diablo Water District Customer Portal now available: online payment options, historical consumption and new features that will be launched soon to help customers manage their water use and bills.  

To pay via phone call: 866-279-7518

Due to the COVID-19 pandemic, our office is closed to the public.  Please use one of our online bill payment solutions or call the office 925-625-3798 to make payment arrangements.

Water Supply

Diablo Water District has two sources of water:

  • Local Groundwater (20% of water supply)
    • Sustainable pumped to match normal recharge rates
  • Delta Water (80% of water supply)
    • Source of water originates in the Trinity, Sacramento, American and San Joaquin Rivers Watershed

Click map for full size image.