The seminar will examine the widely neglected and underestimated adverse nutritional impact of lack of safe water, sanitation and hygiene (WASH). It makes apparent how governments struggling to feed their citizens can make a substantial contribution to food and nutrition security by making WASH investments. Reducing faecal infections through sanitation and hygienic behaviour is a major means for reducing the undernutrition of children, enhancing the wellbeing of children, women and men, and achieving the MDGs. Approaches for scaling-up WASH like Conditional Cash Transfers (CCT) as well as approaches to improve food and nutrition security through productive sanitation will be presented using regional case studies. Together with the participants the potentials and challenges of these approaches will be discussed in rotating discussion groups facilitated by distinguished sector experts. The goal is to get an in-depth understanding of this neglected link and to provide constructive impulses for promising ways forward to strengthen this nexus at scale and push towards fulfilment of the human right to water and sanitation. This seminar was part of World Water Week, 2012.