Contrary to what appears to be popular belief, you can indeed "overdose" on water. Though it's not so much of the "too much water" as it is re: what your body does to maintain equal amounts of other chemicals as they are dilluted by the overabundance of water. See quotation below:
The fact that water can cause fatal overdoses is not well known. Often called "water intoxication" or "hyponatremia" (low salt), water poisoning results when too much water is ingested in too short a time without replenishing electrolytes, particularly sodium and potassium.
The human body (as with other animals) maintains an equilibrium of electrolytes in the bloodstream as part of its normal operation. Sweating causes the body to lose salt, but the primary cause of hyponatremia is drinking enormous amounts of water, which dilutes the salt in the body to a dangerous level. As the electrolyte levels get dangerously out of balance, body systems begin to fail and the sufferer exhibits signs of crisis such as diarrhea, over-salivation, stupor, vomiting, muscle tremors, confusion, frequent urination and other general symptoms of illness, and their brain begins to swell. This swelling is called a 'brain edema' or 'cerebral edema' and can lead to brain damage, paralysis, and sometimes death.
The Maximum Amount of water you should drink a day is infinite. There is no such limit. Here are some tips: Correct timing to intake water will maximize it's effectiveness to Human Body. 2 Glasses Before meal helps digestion. 1 Glass after wake up helps activate internal organs. ! glass B4 sleep to avoid stroke or heart attack midnight. 1 glass after taking a bath, helps lower blood pressure. I hope it was helpful. Don't forget to click the (this was helpful button).
there's no max you should drink water rather than juice because it keeps you hydrated but it really doesn't matter you could drink as much as you want and if your body doesn't need it, it will get rid of it.
The average person should drink between 1-2 liters of water a day, and it's only in cases where they exceed those guidelines by an extreme amount that there is anything to worry about.
You can actually drink too much water. Water intoxication/poisoning, is potentially fatal, and is caused when the normal balance of electrolytes in the body is pushed outside of safe limits by over-consumption of water.
It is very difficult to get water intoxication - the know cases that have occurred are when someone has consumed an extreme amount of water after exercise (without adding back the proper electrolytes) or in water drinking contests.
The maximum amount of water a day depends on your size. Remember that some of your water can come from food. Contrary to what others have answered, it IS possible to drink too much water. Excessive water intake can dilute levels of sodium in the blood. This condition, called hyponatremia, is rare but life-threatening.
I exercise and drink 6L+ of water a day. I go to the loo every 2hrs. This is healthy ask your doctor. Average minimum is 1 to 2L optimum if living in a cold climate and exercising less than 20min a day. Increase if ill, exercising, its hot. The body can adapt and people survive on less, lots are constantly dehydrated and live healthy long lives (Some smokers have 20+ cigs a day and live healthy long lives but I am not about to start smoking). You can drink too much too quickly as the kidneys can only process a certain amount. Check the exact amount in a medical book. This is hard to do and most serious/ fatal cases occur in Ecstasy users or Marathon runners drinking 10L + in a relatively short period. Marathon runners usually know better and add salts to their water, or buy isotonic drinks (salt and glucose basically). The statement always have water to hand and drink when you feel like drinking is very good, your body knows what you need. If you feel thirsty however it is generally too late, you should drink little and often if possible. I?m no doctor just drawing on my own experience and research. Drinking enough water makes you look younger, have clearer skin, not smell.