I would drink 2 - 2.5 L per day in winter...and 3-4 L per day in warmer months.
It's all I drink. I have a glass of coconut water a day, but otherwise it's water.
Even if I do have another drink, say a hot chocolate in winter or a green smoothie in warmer months, it needs to be accompanied with water.
I can chug it down. I always have water on me, I can't leave home without my bottle of water, or else I'll have to buy a bottle when out. But, I can chug down 3 or 4 glasses of water one after the other if I'm thirsty.
According to the 30ml/kg thing I drink a fair bit more than I 'should' but as I do vigorous exercise 5 days a week that causes me to sweat a lot I also need to replace what I lose.
On the plus side, I only ever moisturise or use lip balm if we have strong winds that is harsh on the skin. I don't need to otherwise, and I even work in an environment where I use hand sanitiser constantly all day, which everyone else complains about how dry their hands are and how they're constantly moisturising them.