1. Libbet C. Loughnan () consults as an adviser to the World Bank, Washington, DC, on the international WASH indicators, and was formerly with the WHO/UNICEF Joint Monitoring Programme for Water Supply and Sanitation (JMP) and Data & Analytics Section/Division of Data, Research and Policy, UNICEF, New York.
2. Rob Bain is statistics and monitoring specialist at the JMP and Data & Analytics Section/Division of Data, Research and Policy, UNICEF, New York.
3. Rosemary Rop is water and sanitation specialist and a gender focal point in the Water Global Practice of the World Bank in Washington, DC.
4. Marni Sommer is Associate Professor of Sociomedical Sciences at the Mailman School of Public Health, Columbia University, New York.
5. Tom Slaymaker is senior statistics and monitoring specialist at the JMP and Data & Analytics Section/Division of Data, Research and Policy, UNICEF, New York.