There is a debate on how much to drink. No definitive answer but we should replace the fluid losses and this might equate to 1.2 litres/ day in cold climates and more in hot climates or when exercising.
Water is preferred as it prevents obesity, otherwise would be caused by caloric beverages: soft drinks and beer ( unfortunately) :)
Here is a link that might be useful.
https://www.nhs.uk/news/food-and-diet/six-to-eight-glasses-of-water-still-best/