Improving understanding of urban sanitation
SFDs are a new way of visualizing excreta management in cities and towns
The fate of excreta produced by urban populations across the globe is often poorly understood. Particularly in low- and middle-income with rapidly expanding cities, excreta management represents a growing challenge; generating significant negative public health and environmental risks.
What is an SFD?
An excreta flow diagram (also often described as shit flow diagram, SFD) is a tool to readily understand and communicate visualizing how excreta physically flows through a city or town. It shows how excreta is or is not contained as it moves from defecation to disposal or end-use, and the fate of all excreta generated. An accompanying report describes the service delivery context of the city or town.
Purpose of an SFD
SFDs are a useful tool to inform urban sanitation programming. They offer an innovative way to engage city stakeholders like political leaders, sanitation experts and civil society organizations in a coordinated dialogue about excreta management. They can also be used for advocacy.
Since November 2014, GIZ has been supported by the Bill & Melinda Gates Foundation through a one year start-up grant to promote the initiative.
Partners of the Promotion Initiative
The Centre for Science and Environment in Delhi (CSE);
the Global Sector Program on Sustainable Sanitation of the Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ GmbH)
commissioned by the German Federal Ministry for Economic Development and Cooperation (BMZ);
the Department of Sanitation, Water and Solid Waste for Development (Sandec)
at the Swiss Federal Institute of Aquatic Science and Technology (Eawag);
the water@leeds research group of the University of Leeds (UoL);
the Water, Engineering and Development Centre (WEDC) of Loughborough University,
and the Water and Sanitation Program (WSP) of the World Bank.