Mariappa Kullappa is a Senior Water and Sanitation Specialist with the World Bank Water Global Practice based in Delhi. He has been working in the water and sanitation sector for more than three decades. Kullappa has worked on a range of issues on water and sanitation in rural and urban areas. He has worked with bilateral agencies like DANIDA, Royal Netherlands Assistance, private sector, and academic institutions. He is currently co-leading a Rural Water Supply Program aiming at sustainable service delivery in addition to other projects.