It depends on the depth of the well. The deeper the well, the further the pump should be from the bottom. A general rule of thumb is to install the pump at least 10 feet above the bottom of the well.

The answer to this question depends on a variety of factors, including the depth of the well, the diameter of the well, and the horsepower of the pump. A good rule of thumb is to install the pump so that it is at least 10 feet below the surface of the water in order to prevent it from sucking in air.