As posted in the link above you are not going to hand pump past 300' or so. Most wells out there are 300'+. Since most of the wells out there are 220V I would find out how many amps your pump draws.
Then I would think about a generator that will supply those amps and have it on Propane. You want propane because of the fact you are not going to use it that much and infrequently. A conversion is $150 or so. You will not have to worry about gas going bad and the effect of it sitting in the carb. Propane stores forever.
When the power does go out you run the generator for short periods of time to supply water. This is something that has to be explained to most of the family members. 1/2 hour 2 times a day to do dishes/take a bath and pour drinking water is more than enough. Running this way a 3500W would take a week or so to run through a 30lb tank. http://www.propane-generators.com/
You need a to have a way to change over the power source and the ideal situation would be to have a large enough pump shed to house the generator and tanks. along with the current pump.
Just some thoughts.![]()