For conveying the liquid from one level to higher level or from one location to another location, still pumps play a vital role. In this work, a glimpse of research related to radial flow pump was discussed in detail. To understand the effects of leading edge, four different leading profiles were designed and simulated using commercial computational fluid dynamics (CFD) tools. Plain, Circular, Ellipse2, and Ellipse4 are the leading edges that are discussed with reference to the CFD findings. Among four leading edges, three (Plain, Circular, and Elipse2) are fabricated and tested for performance as well as for cavitation. The significant changes are observed during performance test at constant speeds as well as during cavitation test for various flow rates and speeds. The clear demarcation was observed for Plain, Ellipse2, and Circular leading edge impellers from the cavitation characteristics and found that Circular leading edge impeller was better than all. Extents of cavitation growth from inception in the impeller passage were examined visually. Through computation studies, it was concluded that the Ellipse4 leading edge is found to be better than all leading edges with reference to the hydraulic performance and the pressure distribution along the vane course. This concludes that the leading edge of impeller vanes has drastic changes in the performance as well as in the cavitation aspects.