Deionized water may contain contamination in the form of bits of ion exchange resin - substances used to remove ions from water. Not recommended to drink.
Distilled Water
Distilled water is the most natural form of distillation and Steam Distilled Water is commonly consumed.
We use only Twice Steam Distilled Water for Colloidal Silver
Conclusion
Best will be to quote the authorities:“It has been concluded that the consumption of low TDS water, naturally occurring or receivedfrom a treatment process, does not result in harmful effects to the human body. This is basedupon the following points:•No public health organization with authority over the drinking water qualityanywhere in the world has enacted or even proposed a minimum requirement fortotal dissolved minerals in drinking water.•The human body's own control mechanism (homeostasis) regulates the mineralcontent of the body fluids and the discharge of different types of ions from thebody of normal health individuals drinking water with low or high mineralcontent.•Several types of scientific literature searches have found no harmful effects to thehuman body attributable to the consumption of low TDS water.•Review of the Soviet report has shown that the scientific methods used arequestionable and the conclusions are either vague or unsupported by the data.•Many examples of real-world situations in which large populations have been andcontinue to be provided exclusively with low TDS water without any reportedunusual or ill health effects, establishes the safety of consuming such waters byhuman beings.”WATER QUALITY ASSOCIATIONSCIENCE ADVISORY COMMITTEE1992-1993With Review ByDr. Lee T. Rozelle PDF File