Vancouver's water system is a complex network of pipes that delivers approximately 300-million liters of fresh, potable water into Vancouver homes and businesses every day. This data set includes all water mains on the Dedicated Fire Protection, Distribution, and Transmission water subsystems. Metro Vancouver and the City of Vancouver are jointly responsible for the provision of water services to the residents and businesses in the City of Vancouver. The region of Metro Vancouver owns and operates the water source, treatment and regional water transmission system, while the City is responsible for local water transmission and distribution systems which supply water to residents and businesses. This data is updated frequently in the normal course of business, however priorities and resources determine how fast a change in reality is reflected in the database.