水 refers to the liquid that is essential for life and used for various purposes.

水 can also refer to a body of flowing water.

水 can be used to describe any substance that flows freely and is neither a solid nor a gas.

水 can refer to any kind of beverage in a general sense.

In business or financial context, 水 can mean extra fees or additional income.

水 in this context is used as a classifier for the number of times a piece of clothing has been washed.