Section 25(1) in The Merchant Shipping (Crew Accommodation) Rules, 1960
(1)In every ship to which these rules apply, a supply of drinking water shall be provided in the crew accommodation from tanks of an adequate capacity for the purpose from tanks of an adequate capacity for the purpose having regard to the number of persons in the crew and the time likely to elapse between successive replenishments of the water or by other equally efficient means. If service tanks are fitted for that purpose they shall be directly connected with the ship's, main drinking water storage tanks. In ship of 3,000 tons or over, any pumping necessary for the supply of drinking water in the crew accommodation shall be by mechanical power.
