Water comes in several forms:

• as a potion of water
• in a fountain
• in a sink
• in a pool or moat

Water is that clear liquid that you probably know from real life. In NetHack, water can rust objects or drown you, among other things. In a fountain or as a potion of holy water or unholy water, water has more magical effects. In a sink, water tends to be polluted, and it can have bizarre effects; for example, it might mutate (polymorph) you when you drink it.

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