Jet pumps and systems use a compatible jet pump ejector (a nozzle and a venturi) to create a vacuum to draw water up a well in residential applications. Shallow-well jet pumps use a compatible jet pump ejector for use in wells up to 25-ft. deep. Deep-well jet pumps use a compatible jet pump ejector for wells greater than 25-ft. deep. Convertible well jet pumps use a compatible jet pump ejector in shallow wells (up to 25-ft. deep) or deep wells (greater than 25-ft. deep).