Water-Making Spell

"“Oh,” I stood up, “open your mouth, Aguamenti.” A little jet of water poured into Harry’s mouth."

The Water-Making Spell (Aguamenti) was a charm that conjured a jet of clean, drinkable water from the tip of the caster's wand. This spell, in supplement to being a charm, can also be categorized as conjuration, an enhanced form of Transfiguration.

History
The wand movement for this spell was a slick wave movement from right to left. The Water-Making spell also seemed to be the opposite of the Fire-Making Spell, which was used to conjure flames as an alternative.

This spell was instilled at N.E.W.T.-level in Charms class at Hogwarts School of Witchcraft and Wizardry, to sixth years.

Effects
Depending on the caster's focus and objectives, this charm can be anything from a plain jet of water to a wave. It was taught to sixth year students at Hogwarts School of Witchcraft and Wizardry in Charms class. The spell's incantation was Aguamenti.

This spell was ineffective against Fiendfyre, a spell that conjured cursed flames, as the water conjured from this spell would instantaneously evaporate on interaction with the dark fire.

Known uses
"A jet of water flew out of the umbrella tip. Harry raised his wand arm, and murmured “Aguamenti” too: Together, he and Hagrid poured water on the house until the last flame was extinguished."

— Hagrid and Harry Potter using the spell to extinguish's Hagrid's burning hut.

Etymology
In both Spanish and Portuguese, "agua"/"água" means "water" and "mente" (also in Italian) means "mind"; these derive from the Latin terms "aqua" ("water") and "mens" ("mind"), the latter's singular dative case rendered as "menti" ("to the mind" or "for the mind").