Conventional pump systems consist of a submersible pump and pressure tank (typically located in a basement or crawlspace) conjoined by a water line and electrical wire. The pressure tank contains an air bladder inside a steel tank, which allows the pump system to build pressure as the pump pushes water into the tank, compressing the trapped air. A pressure switch detects when proper cut-off pressure has been met, and the pump turns off. When the spigot is opened, the compressed air pushes water out of the tank and will continue to do this until the cut-on pressure is met and the pump turns back on. There are many determining factors when sizing a submersible pump system, including well depth, yield of water supply, pumping water level, standing water level and the distance from the well to the pressure tank.