To drink water in Engpsh, you can say "drink water" or "have a drink of water." You can also simply say "drink" if the context makes it clear that you are referring to water. For example, you could say "I'm thirsty. I think I'll have a drink" and it would be understood that you are referring to water.
You can also use more specific phrases to describe drinking water, such as "sip water," "gulp water," or "quench your thirst with water."
It's also worth noting that in Engpsh, we often use the word "water" as a verb to mean "to provide or supply with water." For example, you might say "I need to water the plants" to mean that you need to provide the plants with water. This use of the word "water" is unrelated to the act of drinking water.