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.

Contact Us

Office Hours: M - F 8am to 5pm (closed 12-1pm)

Emergencies: 24 hours / 7 days per week

Phone: (925) 625-3798

Email: customers@diablowater.org

Physical Address: 87 Carol Lane, Oakley

Mailing Address: P.O. Box 127, Oakley, CA 94561