International Science Community Association Research Journal of Engineering Sciences 14 3 2025 09 26 Sustainable management of drinking water supply systems in lacustrine areas in Benin: the case of the municipality of So-Ava 34 47 EN MANIONGUI Kris Berjovie 1 Energy and Engineering, Laboratory of Mechanics, Higher National Polytechnic Institute, Marien NGOUABI University, P.O. Box: 69 – Brazzaville, Republic of the Congo NGOUALLAT Nice Mfoutou 2 Energy and Engineering, Laboratory of Mechanics, Higher National Polytechnic Institute, Marien NGOUABI University, P.O. Box: 69 – Brazzaville, Republic of the Congo and National Institute for Research in Engineering Sciences, Innovation, and Technology (INRSIIT), Brazzaville, Republic of the Congo Malanda Christ Ariel Ceti 3 Energy and Engineering, Laboratory of Mechanics, Higher National Polytechnic Institute, Marien NGOUABI University, P.O. Box: 69 – Brazzaville, Republic of the Congo MOUNDZA Debora 4 Energy and Engineering, Laboratory of Mechanics, Higher National Polytechnic Institute, Marien NGOUABI University, P.O. Box: 69 – Brazzaville, Republic of the Congo MALANDA Narcisse 5 Energy and Engineering, Laboratory of Mechanics, Higher National Polytechnic Institute, Marien NGOUABI University, P.O. Box: 69 – Brazzaville, Republic of the Congo and Building Planning and Public Works, Higher Institute of Architecture, DENIS SASSOU NGUESSO University, Kintélé, Republic of the Congo Chowdhury Sharif Muktadir Hossain 1 Charles Darwin University, Master’s of Data Science, Australia Khan Md Sagar Islam 2 London South Bank University, Yadav Kirti 1 Dept. of Electrical Engineering, Dayal Bagh Educational Institute, Agra, India Yadav Alakh 2 Dept. of Physics and Computer science, Dayal Bagh Educational Institute, Agra, India Yadav Mahima 3 Dept. of Electrical Engineering, Dayal Bagh Educational Institute, Agra, India Agarwal Anshul 4 Dept. of Applied Science (Chemistry), Faculty of Engineering and Technology (FET), Agra College, Agra, India Bhole Chetan 1 Department of Civil Engineering, National Institute of Technology, Tiruchirappalli, India V. Anusudha 2 Department of Civil Engineering, National Institute of Technology, Tiruchirappalli, India Sunitha V. 3 Department of Civil Engineering, National Institute of Technology, Tiruchirappalli, India Mathew Samson 4 Department of Civil Engineering, National Institute of Technology, Tiruchirappalli, India YESSOUFOU Arouna 1 Laboratory of Applied Hydrology, National Water Institute, University of Abomey-Calavi, Benin ATINDEKOUN Aminou Tachégnon 2 Laboratory of Applied Hydrology, National Water Institute, University of Abomey-Calavi, Benin and Service des Affaires Générales à la Mairie de Sô-Ava, Benin TOBADA Alexis Babylas 3 Laboratory of Applied Hydrology, National Water Institute, University of Abomey-Calavi, Benin ANANFACK Leslie Abravy 4 Laboratory of Applied Hydrology, National Water Institute, University of Abomey-Calavi, Benin AYATOGANDJI Pierre Zannou 5 Service des Affaires Générales à la Mairie de Sô-Ava, Benin BOURE MouhamedAl-Mourtada 6 Laboratory of Applied Hydrology, National Water Institute, University of Abomey-Calavi, Benin YESSOUFOU Boladji Abdou Waris 7 Service des Affaires Générales à la Mairie de Sô-Ava, Benin YALO Nicaise 8 Laboratory of Applied Hydrology, National Water Institute, University of Abomey-Calavi, Benin MAMA Daouda 9 Laboratory of Applied Hydrology, National Water Institute, University of Abomey-Calavi, Benin > Case Study 2025 7 15 2025 09 26 In lacustrine municipalities, surface water is permanently available and abundant, yet its quality is poor. Nevertheless, the population tends to prefer using surface water rather than water intended for Drinking Water Supply (DWS). This raises the issue of abandonment of DWS infrastructure, despite their presence in all districts of the municipality of Sô-Ava. The objective of this research is to contribute to the sustainable management of drinking water supply facilities in lacustrine environments. The study methodology was based on documentary research, field visits, surveys, and direct observation. The findings of this study reveal that the DWS infrastructure in the municipality is quite extensive and includes Village Water Supply Systems (VWSS), Autonomous Water Post (AWP), and Boreholes equipped with Hand Pumps. However, frequent breakdowns are observed in these facilities (non-functional standpipes and taps in 68.64% of VWSS and 41.17% of AWP). This situation explains the low drinking water coverage rate in the municipality, which stands at 28.54%. In addition to breakdowns, four other factors influencing the proper management of these facilities were identified according to respondents: flooding, the reddish coloration of water, the cost of drinking water supply, and the distance between DWS facilities and households. Finally, sustainable management measures for drinking water supply facilities in the municipality were proposed. These sustainable measures address social, economic, and environmental aspects. Copyright@ International Science Community Association