An underground fountain: it is in one of the entrances of the ShopVille RailCity, the underground shopping mall that provides support to the travelers arriving in Zurich’s Hauptbanhnof [main station]. It would be yet another railway station shopping center, if it wasn’t the biggest commercial space downtown Zurich open on Sundays (and after 20h00, for that matters. Travelers seem to be very needy in this part of the world).
Judging by the lack of finesse of the signage, it seems likely the creator of this fountain was expecting to people to be a bit more civilized and not attempt to to drink, play or bath in the fountain. One thing is clear: this is a kein Trinkwasser fountain.