Where is water stored in train coaches?

There is no water stored in train coaches. Instead, water is supplied to train coaches through an external water tank. This water tank is typically located at the train station and is connected to the train coach through a hose. When the train arrives at the station, the water tank is filled and the water is then pumped into the train coach's water storage tank. This water is used for various purposes, such as drinking, cooking, and flushing toilets.