staying hydrated during pregnancy is important! the institute of medicine set the adequate intake for water during pregnancy at 3 liters per day (there are 4 cups in a liter making it a total of 12 cups) from all sources including tea coffee milk juice soda water and food. the adequate intake is determined by taking the median fluid intake of healthy individuals who are well hydrated. this means that some pregnant women can drink more or less and still be fine. remember to keep water handy and drink to thirst which is likely to increase during this time. for more on general water recommendations see this article <link>
how many glasses of water should i drink during pregnancy?