Preparations

Clean, potent, uncontaminated drinking water is the most basic human need, assuming that a ready supply of clean breathable air is a given.  A person can live without eating for many days but only for a few days without ingesting water.  Dehydration is an unforgiving killer and will quickly deplete your ability to function autonomously.  In a time of upheaval when medical care of any sort may be in just as short supply as law and order, any and all illness or preventable physical weakness, from any source, is something to be strenuously avoided at all costs.

You should know that a power-down of any sort will quickly result in loss of your supply of tap water.  Shop shelves will also very quickly empty of bottled water, assuming that you have either of those luxuries in the first place.  This is one item that you would be well advised to keep an emergency supply of at all times.

So where would you get your water from if these normal supply sources were suddenly not available to you?

There are a number of things to consider.