This paper contains the basic design and construction of a bicycle operated pedal water pump which may not be useful for large scale industry or power plants but can be used in small scale cultivation, and water supply. For the construction of the pump very low cost materials are required and high skill is not required. The pedal power water pump requires a reciprocating pump which will operated by a bicycle. A reciprocating pump is a hydraulic machine converts the mechanical energy to hydraulic energy. In this pump certain volume of liquid is collected by suction in a closed fitted cylinder and then it is discharged using pressure induced by the piston. The pump set and other parts are setup in a frame bracket in which a foot pedals and drive shaft rotates and makes a motion for connecting rod which in turn causes the piston to move linearly. Pumps are a common means of lifting water from a water source to a useful point of access. This pump can be utilized where no electricity has been reached till now. It produces no pollution, it does not require any electricity, and more over it is very convenient for health purpose.