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Christian Walder Water Sector Engineer, European Investment Bank
Christian Walder is responsible for the assessment of the technical, operational, and environmental viability of capital investment projects and programs in the field of water and wastewater services, storm water management, and flood protection. He is an environmental engineer by training and has extensive experience in the preparation and implementation of sustainable and inclusive water projects in numerous countries across Asia, the Pacific, Europe, and Africa.
Within a week of installing environmental nudges, handwashing with soap among students rose to 61% from 15%.