Not of plain water. You don't need to (unless you exercise a lot) as there is so much in your food. Fruit and veg are mostly water after all. Despite being diuretics, net net, you increase your water intake whilst drinking even tea and coffee.
I drink a lot of weak sugar-free Robinson's type dilutable juice and probably about half a litre of water. I am definitely not dehydrated. You can tell you're not if your pee is almost clear or very light coloured. If it's very yellow (always like early morning pees), you probably need to drink more.