Solid waste management (SWM) is an ongoing problem worldwide. As part of the GREEN Project, funded by the European Union, the research team has focused on SWM solutions for areas bordering the East Tonle Sap Lake (ETSL) in three provinces in Cambodia: Pursat, Kampong Chhnang, and Kampong Thom. This research is a foundational step in developing relevant SWM solutions for these communities and focuses on understanding the current solid waste landscape in the ETSL area, identifying relevant stakeholders and actors, and identifying areas of opportunity for SWM solutions.