I drink about a gallon of water a day.
I drink little other than water. Maybe an iced tea or lemonade when we go out to dinner. Once in a great while, I might have pop, usually nothing but regular Pepsi or Coke. But, most of the time, I drink only water. With so many UTIs and migraines I have to keep hyperhydrated, so I drink water all day long and keep two glasses of water on the cubby over our heads in bed, and we keep a gallon jug of water on the floor in our bedroom every night.