The ideal situation is to have some form of safe running water on your property. But what if you don't? Hopefully you have a well, but if your electric goes out your pump will not work. A hand pump will work, but it takes a lot of energy to get that water, and then you have the situation of Operational Security (OPSEC) while you are pumping that water and hauling it to the house.
About a year ago I started seriously investigating an alternative source of water. I looked at hand pumps but at my age of 70 that did not seem a practical solution. I also looked at windmills. In our area of the country windmills are a viable option and have been used successfully for years. But the location of our well is very close to the house and with the trees around here I did not believe that was our solution. If you have a well and the wind conditions, a windmill is something to consider. The costs are about the same as a solar system with less maintenance costs. Around the country there are windmills that have been pumping water for 40 or 50 years. Literally millions of head of cattle are provided water every day by windmills, and they are not the great big windmills being used today to generate electricity.