We’re here to help. Start or stop water service. Learn about incentive programs. Contact Customer Care at 303-893-2444, Monday – Friday, 7:30 a.m. – 5:30 p.m. After hours emergency service is available at 303-628-6801. Start or Stop Service Start or discontinue water service. Transferring Service For Title Company Use: Request a transfer of service by completing an online form. Received a Letter Denver Water sends letters to customers for a wide range of reasons.