Leul Fisseha Zemichael is a PhD candidate in Hydrogeology and a researcher at Mekelle University, with more than 30 years of professional experience in groundwater exploration, assessment, development, and management, as well as humanitarian WASH programming. He holds a Bachelor’s degree in Geology, an Advanced Postgraduate Diploma in Exploration Geophysics, and a Master’s degree in Hydrogeology. His professional expertise includes the application of geophysical methods to groundwater investigation and aquifer characterization, as well as WASH project management, planning, monitoring, proposal development, resource mobilization, and advocacy for equitable access to safe water, sanitation, and hygiene services, particularly for vulnerable populations and children affected by humanitarian crises. His research interests include hydrogeophysics, groundwater resource assessment and management, aquifer characterization, and climate-resilient and sustainable WASH programming.