Distillation is a process of heating water to produce steam which goes through ozonation, then through a filtering process re condensed then bottled. So with that quick explanation out of what is done to produce distilled water let's explain why distilled water is good for the body. But first did you know the human body can only survive without food for about four weeks and only 5 days without water making it very important to remember to drink plenty of water so that your body can stay heal.