Margaret Shawa, Kanyama

How to deal with waste in areas of a city that lack sewers?

Providing sanitation services to unsewered parts of a city is complex. The challenge goes way beyond simply building toilets – its about finding financially viable ways to collect, treat and dispose of waste. WSUP’s new film tells the story of our work in Lusaka, Zambia, to improve sanitation in low-income communities by working closely with the utility, […]


Nairobi’s super-slum Kibera is criss-crossed by sewer mains. So why not simply connect latrines to the sewer? Unfortunately it’s not so simple, for various reasons including high costs. In partnership with Nairobi Water, WSUP has been developing a ‘gradual sewering’ approach that aims to bridge the gap between onsite and sewered sanitation. This note looks at experience to date.