Oftentimes when a small, shallow well is involved, a jet pump is the best solution. Jet pumps rely on atmospheric pressure to function, and as a result, they are typically only used for wells that are no deeper than 25 feet. Jet pumps work by creating a vacuum. They force water through a small opening, called a jet, which creates a pressure imbalance. The pressure imbalance creates a suction force that “pulls” water up to the surface.
Submersible pumps are great for use in wells and work by pushing water up towards the surface. Submersible pumps are much more efficient than above-ground pumps. Above-ground pumps work by pulling water up from beneath the surface, and they often suffer from a problem called cavitation. Cavitation can cause damage to the internal parts of an above-ground water pump, and after a while it will need to be repaired or replaced. Submersible pumps don’t suffer from cavitation, and experience fewer mechanical problems than above-ground pumps. They also need a lot less energy to push water upward then an above-ground pump needs to “pull” water from below. Submersible pumps use centrifugal force to create pressure that then forces water upward.