Water system for a vehicle and method for reducing germs in a water system

A method for germ reduction of a water system in a vehicle, comprising:

• closing valves;
• introducing a germ-reducing fluid into at least one water-conducting device for germ reduction of the water-conducting device;
• interrupting the introduction of the germ-reducing fluid;
• and
• opening the valves.

An aircraft, comprising:

• at least one water supply source that includes a fuel cell;
• at least one water-conducting device connected to the at least one water supply source;
• at least one closing valve arranged directly on an exhaust gas connection of the fuel cell;
• at least one valve for venting the water-conducting device during the germ reduction;
• and
• at least one germ reduction connection connected to the water conducting device to introduce a germ-reducing fluid into the water-conducting device for germ reduction of the water-conducting device,
• wherein the closing valve is further arranged between the water supply source and the germ reduction connection and is fully closeable to prevent any ingress of germ-reducing fluid into the water supply source.