Water supply system for an aircraft, and aircraft with the water supply system

A water supply system for an aircraft, the water supply system comprising:

• a water tank;
• one or more water lines, each of said water lines leading to a consumer group with at least one water consumer and, in a water flow direction upstream of said at least one water consumer, at least one buffer for receiving water from the respective said water line, said at least one buffer being configured to have an air pressure of at least 3 bar when empty of water;
• a discharge line for discharging water from said water tank into said one or more water lines;
• said one or more water lines each being a flexible hose made of plastic, having an internal diameter of at least 4 mm and having a length of at most 100 m;
• and
• a feed pump connected in said discharge line for supplying water from said water tank into said one or more water lines, said feed pump being configured to convey water from said water tank into said one or more water lines at a pressure of at most 25 bar and at a flow rate of at most 1.4 liters per minute.