Many people ask us which water is best to use for enemas. According to Gerson, distilled water is the best. It is going to be the cleanest water. Next would be purified spring water or reverse osmosis water. And some people have used Alkaline Water or Kangden Water, but we don't know the effects of that in enemas.
Never use tap water. It contains so many chemicals, metals and junk, that it would be the worse thing to use. You don't want more toxins going into your blood.
When you are making your enema coffee on the stove, always use distilled water to cook it in. Never tap water.