Access to clean water and sanitation is a major requirement for all countries in achieving the Sustainable Development Goals (SDG). The main aim of the study was to investigate the state and condition of water and sanitary facilities in selected secondary schools within Oyo State, Ibadan, Nigeria. Data was collected through the use of structured questionnaires and interviews with the students and teachers. Physical observation was also done onsite to supplement data gathering. The results revealed that deep-tube wells and pit latrines were the most widely used water and sanitation facilities in the study area. 70% of the schools surveyed used traditional pit latrines while 73% of schools had deep-tube wells respectively. In addition, there were limited drinking water and hand washing facilities in all the schools investigated. This study therefore recommends that government should increase funding for the provision of water and sanitation facilities in all schools in this state; as these would ensure good and enabling environment for learning as well as reducing outbreak of infectious diseases.Keywords facilities, sanitation, schools, SDG, water.