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.

Important Notices

Notice for Fish Tank Owners

The District uses chloramines to disinfect your drinking water supply and keep it safe. Chloramines are a long-lasting, safe disinfectant that is becoming increasingly popular across the country. Chloramines are toxic for fish. If you are using tap water, you should assure that the fish are properly protected. Local pet shops can advise you on the best measures to neutralize chloraminated water.

Notice for Those on Home Kidney Dialysis

The District uses chloramines to disinfect your drinking water supply and keep it safe. Chloramines are a long-lasting, safe disinfectant that is becoming increasingly popular across the country. While chloramines pose no health hazard to the general public, people undergoing home kidney dialysis treatment should consult their physician before using the water in the dialysis unit.