1. Emmett Interdisciplinary Program in Environment and Resources, Stanford University, Stanford, CA 94305, USA
2. Dept. of Civil and Environmental Engineering, Stanford University, Stanford, CA 94305, USA
3. Water Regulatory Council (CRA), Maputo, Mozambique
4. Water and Sanitation Program, The World Bank, Maputo, Mozambique
5. Woods Institute for the Environment, Stanford University, CA 94305, USA