There is a lot discussion about deionized water going on. But what is this type of water? There are different types of distilled water and they are so named depending on the kind of treatment process they undergo. Distillation leads to distilled water; reverse osmosis leads to RO water; deionization leads to deionized or demineralized water. All these are distilled water devoid of impurities. Basically they are the same, pure H2O including no solutes and colloidal particles.
Water has to undergo treatment process to be beneficial since this sort of liquid originating from reservoirs... [...]