Muggles' Guide to Harry Potter/Magic/Aguamenti

Overview
The Aguamenti charm causes a stream of clear, potable water to issue from the tip of the caster's wand.

Extended Description
In Harry Potter and the Half-Blood Prince, Harry's sixth year class were taught this charm. Later in that book, when Harry and Dumbledore are at the cave of the locket Horcrux, Harry uses Aguamenti to refill the crystal goblet with water, of which Dumbledore can drink; the water vanishes before it could be drunk, however. This spell is used once again in that book, when Harry and Hagrid cast jets of water to put out the fire of Hagrid's burning hut.