If you plan on living off the grid you would want to minimize your electricity load as much as you can. One of the things you can do is not rely on power to pump your water. Pumping water with no power is something that has been done for hunreds of years.
If you are in a situation where you want to get access to fresh water located downhill from your residence then check these instructions out! Even if this not of use to you the knowledge is pretty interesting.
