This is a poster from the Welthungerhilfe Research Into Sludge Enterprise (RISE) project funded through CS WASH Innovation and Impact Grant seeks to investigate the feasibility of mobile desludging in small towns of Zimbabwe using a prototype mobile desludging unit (MDU) developed by WASTE-Malawi. This poster presents the research questions, expected changes and lessons to date. Lessons are particularly relevant to other CSOs aiming to support faecal sludge  businesses and assess the regulatory context.