many people do count "clear" beverages as their water consumption. However, you should be aware that lots of extra artificial sweetener sometimes triggers your appetite moreso than plain water, or water with lemon, lime, cucumber, or things like that added for flavour (as opposed to Crystal Lite, Mio and other artificially sweetened additives)
Here is the ruling by the expert beverage researchers....
All those liquid beverages count as fluid/water: milk, juice, pop, diet drinks, tea, coffee, etc.... But of course, each has an upper limit regarding overall health. This SP articles gives the upper limit for each category:
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