After the construction of the city’s aqueduct in the 1st century AD, Ostia was provided with a series of water fountains, distributed among both public areas and the communal spaces of buildings. The appearance of these fountains varied depending on their location and visibility: in the city squares and along the main streets monumental nymphaea and fountains, whilst along the smaller lanes and inside buildings, the simpler “trunk-shaped” fountains were preferred, so-called for the characteristic shape of their roof. This type of fountain, of which numerous examples survive in Ostia, is characterized by the presence of a basin (A) covered with a barrel vault and accessed through a little window (B) and in this case connected to a tank at the back (C): water could be drawn through the opening using pails or from the two spouts at the front, beneath which purpose-made depressions (D) in the floor allowed for the correct positioning of the recipients.