Twenty percent of your water need will come from the foods you eat. The rest of your water need should come from the beverages you drink. Water is the best choice. Sodas have a lot of sugar in them, so if you drink sodas, you may take in more calories than you need. Herbal teas that aren't diuretic are fine. Sports drinks contain electrolytes and may be beneficial, just look out for added sugar and calories that you don't need. Juices are good because they have vitamins and nutrients.
Caffeinated beverages will also add to your daily water need. Even though caffeine is a diuretic, if you regularly consume caffeine, your body will regulate itself to that diuretic effect.
I think it's also pretty safe to say that if you're nursing you should be adding more to that number as well. Interesting huh? Like everything else, each person needs a different amount, so I hope you know what you need now and will do your best to achieve it! Water is so important to our bodies! It seriously regulates every part of us and a lack of it can cause some major issues within us. Happy Watering!