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Mitsuaki Hirai

United States of America

Mitsuaki Hirai Member since 08/05/2026

Global Environment Facility Independent Evaluation Office

Evaluation Officer
Website

Mitsuaki Hirai is a public health professional with over 10 years of experience in water, sanitation and hygiene (WASH), global health, and monitoring and evaluation.

Prior to joining GEF IEO, he worked for UNICEF where he conducted WASH and health project monitoring, led knowledge management activities, and published multiple peer-reviewed journal articles to inform evidence-based programming in Zimbabwe and Somalia.

Previously, he also completed a two-year evaluation fellowship at the U.S. Centers for Disease Control and Prevention (CDC) on global health program monitoring and worked for Village Hopecore International as a Global Health Fellow. He holds a Doctor of Public Health (DrPH) from George Washington University, a Master of Public Health (MPH) from UCLA School of Public Health, and a Bachelor of Arts (BA) from Soka University of America.

My contributions

  • Blog

    Long-Term Efforts to Bear Fruits of International Cooperation: Insights from the International Waters Evaluation

    Marine and freshwater pollution in transboundary water bodies is one of the most pressing environmental challenges of our time. Every day, plastic waste equivalent to more than 2,000 garbage trucks is released into rivers, lakes, and oceans. With around 60 percent of the world’s freshwater flowing through transboundary waters, pollution rarely stops at national borders, impacting ecosystems and communities far beyond its point of origin. This reality highlights the critical importance of transboundary water management based on international cooperation. Yet, such cooperation cannot be achieved...
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