If you get your water from a well, your home needs a jet pump and pressure tank. During normal operation, the jet pump fills the pressure tank with water to the pump's preset pressure and shuts off. It cycles on again when the pressure falls below the pump's cut-in pressure, thus maintaining the pressure in your water lines. It isn't difficult to connect the pump to the tank and to connect both to the water system. You need to adjust the bladder pressure of the empty tank to conform to the cut-in pressure of the pump, however.