With funding from the Bill & Melinda Gates Foundation, Water For People is implementing Sanitation as a Business (SAAB), a market‐based approach to sanitation intended to explore different methodologies for catalyzing and facilitating sanitation businesses in developing countries. It is a 4-year project ending July 2014 under which Water For People is working through Business Development Service (BDS) firms. BDS are for‐profit, private sector firms, who serve as the primary program implementers and are the main point of contact for sanitation entrepreneurs receiving support in business planning and expansion. SAAB is currently being implemented in seven different countries: Malawi, Rwanda and Uganda in Africa; Bolivia, Peru and Ecuador in South America; and Bihar and West Bengal in India. 

For detailed information on these projects, have a look here.