In aiming to provide an economical supply of potable water for the inhabitant of University of Ilorin and its environs, 2-D Electrical Resistivity Tomographic development was adopted. A 2-D Electrical Resistivity Tomographic Techniques involves the application of gridded Wenner electrode arrangement in determining the variation of subsurface resistivity distribution. The surveying were carried out on field by employing 7 profiles containing 22 layouts all together with a constant surveying lengths of 150 m. The data obtained on field were inverted to obtain a pseudo-section where clearer models of the depth and apparent formation resistivity can be viewed at the same time using EarthImager Software. Three geo-electric layers were delineated which are Top soil, weathered/fractured Basement and fresh Basement. Out of the 7 profiles obtained the fresh Basement rock was only seen at profile F-F’ having resistivity values ranging from 2000.1 to 10000 Ωm. The thickness of the weathered/fractured basement (aquifer) is generally greater than 22.0 m and with a low resistivity values which are less than 30 Ωm at some zones. In conclusion, this study shows some levels of confidence that the groundwater potential within Unilorin substratum is of economic volume that is capable to sustain Unilorin and its environs.