Bush House Hub: Opposite the toilets on the ground floor next to the shack
Strand Hub: Close to the toilets near the Great hall, accessible via the main corridor
Guy’s Hub: Adjacent to the desk
Waterloo Hub: Behind the desk to the left in the microwave area.
Denmark Hill Hub: There are water fountains in the canteens, one in the SU, and there are more dotted around the campus, usually in open door kitchen areas.