Myths and purported health effects of
water from a water distiller

A popular myth about distilled water is that it has the dangerous property of being more easily heated above its boiling point without showing the normal characteristics of boiling. This is called superheating.

When the superheated water is disturbed or has impurities added to it, a sudden, explosive boil occurs, possibly causing serious injury to anyone near it.

In fact, superheating of plain tap water, for instance in the microwave, is just as great a danger as when heating distilled water.

The drinking of distilled water has been both advocated and discouraged for the purported effect of drinking water in its pure form is a 'more powerful solvent' that helps cleanse toxins from the body. Detractors argue that it robs the body of essential minerals in this way and also deprives it of minerals normally acquired from drinking water. There is no evidence to support either view and neither argument has a sound basis in chemistry or biology.

Problems of distilled water - Best Water Purifiers

It has been suggested that because distilled or reverse osmosis produced water lacks fluoride ions which are normally added at a water treatment plant for its effect on the inhibition of cavity formation, the drinking of distilled water may conceivably increase the risk of tooth decay due to a lack of this element.

However, fluoride is not an essential mineral for the human body, so this claim is quite dubious. Regardless, most people continue to cook with common tap water and this is thought to potentially provide sufficient fluoride to maintain normal Prophylaxis in many instances. Any other minerals in tap water such as calcium and magnesium are present in such minuscule amounts that their absence is compensated for many thousands of times over by other dietary sources. (Source: Wikipedia)  

Solar Water Distillers

operate on the same principles that produce rainfall. The sun is allowed into and trapped in the Solar Water Distiller.
The high temperatures produced destroy all pathogens. The water evaporates, and in this process, only pure water vapor rises in the Still, only to condense on the glass. The glass is sloped to the south, and the condensed water runs down the glass and is collected in a trough. The water is allowed out of the collector through silicone tubing, and is collected in 5 gallon glass jugs. There are no moving parts in the solar still, and only the sun's energy is required for operation.