Much of it’s not drinkable or usable in its current state, even when there’s water all around us in abundance.
That is as long as not only is lots of our water contaminated, some water has excess salt or minerals as well as harmful bacteria. Anyways, two processes, deionization and demineralization, ourselves but usually done together. Deionizing water is a process that uses ion exchange resins to remove ionized salt from the water. This process can theoretically remove all traces of salt from water. In practice, therefore this process also removes harmful things like viruses, bacteria and organic materials. Considering the above said. They replace them with hydrogen to soften the water, commercial grade deionization equipment also not only removes the ionized salt molecules.
Demineralization is often a term used interchangeably with deionization. Demineralization is essentially removing all the minerals that can be found in natural water. This process is usually done when the water could be used for chemical processes and the minerals present may interfere with the other chemicals. All chemistic and beauty products have to be made with demineralized water for this reason. While being similar, Deionization and demineralization, have key differences. Deionization removes ionized salt from the water. It is demineralization removes minerals from the water just like calcium, magnesium and many others. Much of the drinking water that we consume goes through both processes.