Introduction: This study aims to evaluate the water supply system as well as hygiene and sanitation measures in schools. Materials and methods: It was a descriptive cross-sectional study conducted in ten schools in the commune of Mangobo from October 5 to November 5, 2024. Direct observation was used to collect data based on an observation and interview grid. Entered in Excel, the data were imported into STATA 15 for statistical analyses. Results: The schools in the private and official networks were dominant. The majority had fewer than 1500 students, fewer than 20 teachers, and more than 20 classrooms. The schoolyards were enclosed with temporary materials. A large number of schools do not have puddles of water in the courtyard and are not littered with waste. However, an average level of classroom maintenance and overall sanitation was observed. All schools had a source of drinking water from the water distribution authority, available in the courtyard in 3/5 of the cases. The establishments had latrines in 3/5 of the cases, the vast majority of which were separated by category with a locking system. Disinfection materials were less available. The overall condition of the latrines was good in the vast majority of cases. Six out of ten schools had handwashing facilities, but water and soap were consistently available in three out of five cases. Conclusion: It is important to take into account the need and functioning of hygiene and sanitation facilities to ensure sanitary conditions in schools.