What is a jet well pump?

Jet pumps are used to draw water from a ground water source into a home. Jet pumps are located in the home, generally in the basement. There are two types of jet pumps - shallow and deep - and are used with a pressure tank. Shallow pumps use a single pipe to to draw water from up to 25 feet, while deep pumps use a two pipe system and can draw water from between 25 and 90 feet.