The advertisements for drinking water are abundant in the media.  Everything from detoxing your body, cleaning out your kidneys, to suppressing your appetite and shuttling fat quicker through your body.  There are many people you see on the street that have a cell phone in one hand a bottle of water in the other.  Our society has been conditioned that constantly drinking water is extremely healthy.  The trend has spread out into Europe as well, and there are now thousands of bottled water manufacturers world wide, touting that their product is superior.
There are two kidney experts that believe that there is no definitive scientific proof for the average person to consume eight or more glasses of water per day.  According to the Journal of the American Society of Nephrology, the health claims are almost non existent, and minor in comparison from what the media is reporting.

The fact about water being a good appetite suppressant has been proven wrong in the fact it is absorbed so quickly upon ingestion does not satiate people as much as has been previously thought.  There is no evidence that there is any hormones which are released as previously thought.  Consuming large amounts of water does not remove excess toxins.  What ends up happening is that the person builds up excess urine, which doesn’t contain any excess toxins as previously reported.

There is also a danger to drinking too much water as it may dilute the electrolytes that are needed for proper body function.  These can be replaced with a non-stimulant energy drink.  So the moral of the story here is that moderation is best.