Plumbing means plumbing as defined in Section 1(1) of the Act.
Plumbing fixture means a receptacle or device that is permanently or temporarily connected to the water distribution system of the premises and demands a supply of water from the system; or discharges used water, waste materials, or sewage directly or indirectly to the drainage system of the premises.
Plumbing system means water supply distribution and disposal piping on the premises, including appliances and equipment attached thereto, between their connection points to a public or private system.
Bathroom means any room containing a built-in flush-type toilet.
drainage work means any watercourse and includes any land which is expected to provide flood storage capacity for any watercourse and any bank, wall, embankment or other structure, or any appliance, constructed or used for land drainage or flood defence;