a good rule of thumb for water consumption (in ounces) is take your current weight in pounds and divide by 2. half of 160 is 80 ounces. I see this is the value suggested by Miss Teri. if your urine is clear, you have arrived, and even if slightly tinted you're fine. if deeply colored then add another cup a day for about a week, then cut it back. the body dumps more stuff at some times than others, and you'll notice if you're watching. I agree that all fluids can be counted. I even counted caffinated cokes, but only 8 oz. for a 12 oz. can to make up for its diuretic effect. Please note that phosphoric acid is also a diuretic, and is found not only in the leaded versions of sodas but diet caffeine free as well.