(1)
A building control valve shall be provided
(a)
on every water service pipe at the location where the water service pipe enters the building, or
(b)
on the water distribution system at a location immediately downstream of the point of entry treatment unit, where the building is served by a point of entry treatment unit located in the building.
(2)
Pipes that convey water from a gravity water tank or from a private water supply system shall be fitted with a shut-off valve at the source of supply.
(2.1)
Except as provided in Sentence (2.2), a drain port shall be provided on the water distribution system immediately downstream of the building control valve required by Sentence (1) and if there is a meter, the drain port shall be installed immediately downstream of the meter on the water distribution system.
(2.2)
Where the building control valve required by Sentence (1) is of NPS 1or smaller, the drain port may be an integral part of the building control valve in the form of a stop and waste valve and the drain port shall be located on the water distribution system side of the stop and waste valve.
(3)
Except for risers that serve only one dwelling unit, risers shall be provided with a shut-off valve located at the source of supply.
(4)
Water closets shall be provided with a shut-off valve on their water supply pipe.
(5)
In buildings of residential occupancy that contain more than one dwelling unit, a shut-off valve shall be installed where the water supply enters each dwelling unit, so that, when the water supply to one suite is shut off, the water supply to the remainder of the building is not interrupted.
(6)
In buildings of other than residential occupancy, shut-off valves shall be provided on the water supply to
(a)
every fixture, or
(b)
any group of fixtures in the same room, except as provided in Sentence (4).
(7)
Pipes that supply water to a hot water tank shall be provided with a shut-off valve located close to the tank.
(8)
Where the water supply is to be metered, the installation of the meter, including the piping that is part of the meter installation and the valving arrangement for the meter installation, shall be according to the water purveyor’s requirements.
(9)
For the purpose of identifying the pipe material where plastic water pipe is used underground for a service pipe, the end of the pipe inside the building shall be brought above ground for a distance not less than 300 mm and not greater than 450 mm.