Thoughts about having a water well dug

don't know about the rest up you, but in my mind, I sorta keep a list of: What has to be done, what needs to be done, and what I would like to have done, in that order of priority. Sadly having a water well dug falls into the last category. But living on public water does concern me, there are so many things that could go wrong, that would stop the flow of water. Of course, when people have water well dug, they usually use an electric pump to get the water from the well, but in case of no electric, a rope and bale system can be used and pull about 3 gallons of water out the well per trip, using nothing but human power.
I know a lot of people store water, In my mind, for a few days, or even a week or so, ok, but much more than that I don't see it practical, least not for me with limited storage space. I have also considered buying a water tank that fits into the bed of a truck to make trips to the river to retrieve water.
I don't know, a person, or at least speaking of myself only, has limited money, and there always seems to be things that really need attention, and money. It's hard to invest a considerable amount of money on something that may never be used.
Your thoughts we be more that welcomed.