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such water supply to be served through a cistern separate
from that used for storing drinking water or through a
cast iron flushing tank so constructed as to discharge not
less than three gallons of water at each flush by means of a
down pipe having an internal diameter of not less than
one inch and a quarter.
Where, however, any water closet is provided for the
use of persons occupying two or more separately occupied
premises, or for the use in common of the occupants of rooms
in a house entirely let out in apartments, the foregoing
requirement shall apply to the owner or landlord, as the
case may be.
For securing the Cleanliness and Freedom from Pollution of
Tanks, Cisterns, and other receptacles used for storing
of Water used or likely to be used by Man for Drinking
or Domestic Purposes, or for manufacturing Drink for
the use of man (S. 50).
12. The occupier of any premises on which a tank,
cistern, or other receptacle is used for the storing of water
used or likely to be used by man for drinking or domestic
purposes, or for manufacturing drink for the use of man,
shall empty and cleanse the same, or cause the same to be
emptied and cleansed, once, at least, in every six months,
and at such other times as may be necessary to keep the
same in a cleanly state and free from pollution, and the tank
or cistern shall be kept at all times properly covered.
He shall cause every such tank, cistern, or other
receptacle which is erected outside a building, or which,
being erected inside a building, is not placed in a suitable