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on the staircase at each storey above the lowest storey and opening
directly to the external air.
2. - ARTIFICIAL LIGHTING
(a) Every habitable room, hall, passage, bathroom and water
closet shall be provided and maintained with suitable means for
securing adequate artificial lighting either by electricity or gas.
(b) There shall be provided and maintained adequate means for
the artificial lighting of all common staircases and passages by
means of either electricity or gas as required by the Council's
Byelaws as to artificial lighting of common staircases in tenement
houses and flats.
Artificial lighting controlled by a suitable system of retracting
switches or other similar devices shall be deemed to be
adequate.
3. - VENTILATION
Every room, hall, passage, staircase, bathroom and water
closet apartment shall be provided and maintained with adequate
means of ventilation.
4. - WATER SUPPLY
A proper and sufficient supply of water for drinking purposes
from the mains of the Metropolitan Water Board or other suitable
sources shall be provided and maintained. The premises shall
be deemed to be without a proper and sufficient supply unless:-
(a) such supply is provided within the room or one of the
rooms in the separate occupation of each family;
(b) in the case of a hostel, boarding house, guest house,
boarding school or similar establishment, such supply is
reasonably accessible to the occupants of each room used for
sleeping,
(Note - The Metropolitan Water Board's Byelaws require the
provision of a stop tap to each chargeable supply, and it is