Spring of Kallirrhoe
From Project Athinai
The spring was located outside the walls of Athens, near the Diomeian Gate, on the Ilissos river where two cisterns had been carved in the river bed. The water collected in these cisterns was redirected to the nearby Enneakrounos Fountain House and to the Peiraeus through tunnels cut in the rock. A light bridge crossed the Ilissos immediately upstream of the cisterns.
This spring played an important role in the marriage customs. On the day of the marriage, the bride washed herself with water brought from the Kallirrhoe spring in a loutrophoros. This vase was later brought to the Shrine of the Nymphe as a dedication.
Travlos, John, Pictorial dictionary of Ancient Athens, Books that matter, New York, 1971, p. 204, 361