Questions about your water bill and to provide a meter reading:
Contact 311 and select 'option 1' when prompted.
Hours: Monday to Friday, 8:30 a.m. - 6 p.m.

Other utility billing inquiries (pre-authorized payments, moving, Solid Waste billing and more):
Contact 311 and select 'option 3' when prompted.
Hours: Monday to Friday, 8:30 a.m. - 4:30 p.m.

For all other inquiries:
Hours: 24 hours a day, seven days a week
Telephone: 311
Outside city limits: 416-392-2489
TTY: Use 711
Email: 311@toronto.ca