This section is from the book "Modern Buildings, Their Planning, Construction And Equipment Vol3", by G. A. T. Middleton. Also available from Amazon: Modern Buildings.
In all schools adequate and wholesome drinking water must be available for scholars.
In cases where it is not taken from the mains of an authorised company, care must be taken to ascertain that it is both adequate in quantity and of suitable character, and not liable to pollution in any way by surface drainage, leakage from sewers, drains, cesspools, or other receptacles. Water pipes should be properly protected from frost, and laid in such positions that, in the event of their becoming unsound, the water will not be liable to foul or escape without observation.
There should be no communication between any pipe or cistern from which water is drawn for domestic purposes and any w.c. or urinal. Any cistern used for water storage should be properly covered, ventilated, and placed in such a position that it may be readily inspected and cleansed.