Aquarius is associated with the tarot card The Star, often interpreted in terms of generosity, hope, inspiration, and serenity.

Aquarius was known to the Babylonian astrologers who associated the constellation with the god Ea, who is commonly depicted holding an overflowing vase. Aquarius was also associated with the destructive floods that the Babylonians regularly experienced, and thus was negatively connoted. In Ancient Egypt, Aquarius was associated with the annual flood of the Nile; the banks were said to flood when Aquarius put his jar into the river, beginning spring.

In the Greek tradition, the constellation became represented as simply a single vase from which a stream poured down to Piscis Austrinus.

In Greek mythology, Aquarius is sometimes associated with Deucalion, the son of Prometheus who built a ship with his wife Pyrrha to survive an imminent flood. They sailed for nine days before washing ashore on Mount Parnassus. Aquarius is also sometimes identified with beautiful Ganymede, a youth in Greek mythology and the son of Trojan king Tros, who was taken to Mount Olympus by Zeus to act as cup-carrier to the gods. Neighboring Aquila represents the eagle, under Zeus’ command, that snatched the young boy; some versions of the myth indicate that the eagle was in fact Zeus transformed. An alternative version of the tale recounts Ganymede’s kidnapping by the goddess of the dawn, Eos, motivated by her affection for young men; Zeus then stole him from Eos and employed him as cup-bearer. Yet another figure associated with the water bearer is Cecrops I, a king of Athens who sacrificed water instead of wine to the gods.