Is not what you think.
Figures were published recently as part of a National Health and Nutrition Examination Survey, with 5,627 respondents reporting on all they drank over 2 days in 2009-10, a surprisingly long time ago.
Average consumption of all water was 0.55 litres a day.
Coffee consumption was 6 times higher at 8.00 in the morning than at lunchtime and still lower after dinner.
Soda consumption peaked at midday and again in the early evening.