KATHMANDU: Minister for Drinking Water and Sanitation Mahendra Yadav on Saturday said that much work was yet to be done in the area of sanitation. He said this at a programme organised at Bafal on the occasion of 19th week of Ring Road Sanitation Campaign this morning. Minister Yadav further stressed on the need for setting up a separate department for sanitation. “It is the shared responsibility of all sectors to keep Kathmandu clean.”