How do i change my email address with denver water? If you change your email address, you can do so through Denver Water Online. Or you can inform us through our Customer Care Contact Form or phone at 303-893-2444. Make sure you have your account number and customer ID handy when enrolling.How do i report a water emergency in denver colorado? Water Emergencies. Denver Water provides water emergency response 24 hours a day. Report a leak, main break or emergency service problem. Call 303-893-2444 during regular business hours, Monday – Friday, 7:30 a.m. – 5:30 p.m. After hours call 303-628-6801.How do i contact sanitary sewage service in denver colorado? Sanitary sewage service for Denver Water customers inside the City and County of Denver is provided by the Wastewater Management Division, Department of Public Works. For 24-hour emergency sewage service call 303-446-3400.How do i enroll in denver water online? Enroll through Denver Water Online (Manage My Account). All you need is your account number and customer ID (both located at top of your bill). Make sure you have your account number and customer ID handy when enrolling. Securely receive your water bill in your regular email inbox.