Most experts agree that slower weight loss is best.
It is fast enough for the dieter to see the changes yet slow enough to not cause health hazards. But, the only water weight you want to lose would be associated with the fat you are losing. To reduce the water in the body without proportionate tissue loss causes dehydration. This is a dangerous thing to be doing to yourself. Thirty pounds of water is all of the water associated with over 38 pounds of body weight.