The study attempted a municipal water supply planning in Oyo metropolis using a land based approach
to prepare a long range forecast of water supply demand for Oyo metropolis with the aim of providing
effective planning, development and operation of water supply and distribution networks which is one
of the most essential compounds of urban infrastructure. The problem of water sector in Oyo
metropolis was reviewed and the challenges which may result from the capacities of the facilities of the
provision in Oyo metropolis was taken care of through the designs of facilities that will ensure
adequate planning for, till the projected year. The study delineated the areas within the metropolis that
are unserved or underserved by the water corporation. Geographic information system (GIS) was
applied to existing distribution maps of the water corporation to present a graphic detail of the current
state of facilities frame work for taking management of new facilities was given. Large scale facility
maps that will serve as source of information for vital application for the Erelu water corporation in
carrying out its daily function were produced. Such maps in digital forms are extremely vital and are
useful to integrate collateral data, that is, available within the corporation.