"Let me classify the nine kinds of water. They are hard water, raw water, boiled water, soft water, rain water, snow water, filtered water, de-ionized water, and distilled water. All are kinds of water - but remember this: only one of these nine kinds of water is good for you.
Distilled water is water which has been turned into vapor, so that all its impurities are left behind. Then, by condensing, it is turned back to pure water. It is the only water which is pure - the only water free from all impurities".