As a result, Isabel Blackett, Peter Hawkins, and Christiaan Heymans authored The missing link in sanitation service delivery: a review of fecal sludge management in 12 cities.

[1] Using this as a basis, a group of excreta management institutions began collaborating in June 2014 to continue development of SFDs.

In September 2019, the focus of the program shifted to scaling up the current methods of producing SFDs to allow for citywide sanitation in South Asia and Africa.

It is partnered with many nonprofit organizations such as the Centre for Science and Environment, Eawag, and the Global Water Security & Sanitation Partnership.

Using a shit flow diagram allows political leaders and members of the community to see at a glance the challenges facing their sanitation systems, and where improvements will be most effective.