Water and sanitation remain key issues for development in Cambodia. Since 2012, the Rhin-Meuse and Loire-Bretagne water agencies have been supporting the Tonle Sap Lake authorities to promote Integrated Water Resources Management (IWRM) in the Stung Sen river basin. HAMAP-Humanitaire is contributing to this objective by proposing various projects to provide access to water and sanitation in priority villages in the basin. The aim of this project is to set up a drinking water supply system and improved sanitation infrastructures in the villages of Reaksa and Tang Krasov, which currently have none. This project is therefore part of a more global and concerted program for water management and governance throughout the Stung Sen basin, in close collaboration with a number of French and Cambodian stakeholders.