There are 2 wrong points on the list.

1. Water does not cause weight loss.
2. Yeah water is needed to flush out the toxins that are filtrated out of our blood.... But it really doesnot matter if you drink 2 liters a day or 5 liters. The human body tries to hold on to as much water as it can. And if you drink 5 liters instead of 2, the toxic "stuff" will just be less concentrated in the urin.