This document presents information about jet pumps. It discusses the definition of a jet pump, its main construction parts including the strainer, foot valve, ejector assembly, nozzle, venturi, pressure switch, and regulating pressure gauge. It describes how jet pumps work and the items needed for installation, including the jet pump, pressure tank, well seal, pipes/fittings, and tools. It lists the merits as being light weight, easy to install, long life, and high production rate, and the demerits as lower efficiency, higher power requirements, and potential space limitations. Applications mentioned include suction of muddy water, in mining, and suction from small bore wells.