3 litres of water is my minimum intake daily. I aim for about 4.
This has been informed by some snazzy pee dipsticks that I was using to check my ketone levels (I eat ketogenically).
They happened to also tell me that my urine was showing signs of dehydration when I only drank 2.75 litres. So now I aim for at least 3, preferably more.
Obviously, your circumstances are very different from mine, but it goes to show that a generous water intake is not in itself a bad thing.
All you need to do is ensure that the rest of your food, drink, activity and lifestyle are also balanced - enough electrolytes, correct medication at the correct times, etc. etc. and listen to your own body.