21.8.1 An adequate supply of fresh drinking water
should be provided and piped to convenient positions throughout the
accommodation spaces.
21.8.2 In addition, an emergency reserve supply
of drinking water should be carried, sufficient to provide at least
2 litres per person. The installation of fresh water making machines
and disinfection arrangements are to be to the acceptance of the Administration
(for this purpose silver ionisation or chlorination would be considered
acceptable).