CHC in collaboration with Predikt supported UNICEF and the Government of Indonesia to develop a WASH coordination mechanism for national and provincial responses, with roles for government institutions and nongovernmental organizations laid out. This was achieved through a systematic assessment of the WASH in Emergencies (WiE) sector in Indonesia. This study aimed to complete a detailed mapping exercise, an after-action review of past responses and a gap/bottleneck analysis of the sector’s responses in several areas in Indonesia. Key outputs of this exercise are a Road Map and Capacity Development Plan for stronger WASH coordination and a more effective delivery of services for disaster affected populations in Indonesia.