Lets see..... 1 beer in the evening, 3 fingers of Buffalo Trace bourbon neat before bed, at least two big glasses of sun tea, a Dr Pepper & crushed ice filled Yeti mug for work and commute, then theres a water glass full of orange juice with breakfast....about six glasses of hydration for me on average.....
During my military career I was stationed in the middle east /gulf region many times and saw folks drink to much and to little water in the extreme conditions. Individual limits are based on exertion and environment IMO. To set a healthy amount as standard for the average person is silly.
Ya get thirsty or doing hard work ......just drink.
Stay Safe !!
Did you know that the average American has one ovary and one testicle?