How much water should I drink daily?

I drink very small amounts of water and I know that it is not good. How much should I drink during the day? I'm 30.

Amount of water one needs depends on heat, activity, and more. Yellow urine indicates low hydration. Drink enough to keep urine clear.

64-80 ounces of water daily.

A good general rule is to drink half your body weight in ounces.

A minimum of 64 ounces of pure water or one-half of your body weight in ounces. Pure water does NOT include flavored waters.