I only count pure, unadulterated water. I feel it is the best for your body. Water and tea have caffeine which is a diuretic that dehydrates a person. The flavors that people frequently add to water such as Crystal Light have calories. It can all get complicated so that is another reason why I just stick to plain water.
If you are having trouble getting enough water in try putting it in one of those trendy water bottles that have the ounce measurements on the side. Pick one that is a fun color. If it is plain, you can decorate it with stickers that inspire you. Make a game out of getting those 8 glasses in