Contact Us

Office Hours: Open Monday – Friday - 8:00 a.m – 5:00 p.m. (our lobby is closed on Fridays)

Emergencies: 24 hours / 7 days per week

Phone: (925) 625-3798

Email: customers@diablowater.org

Physical Address: 87 Carol Lane, Oakley, CA 94561

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