Service delivery models for universal, safe and sustainable water services in Ethiopia

A researcher at heart, Marieke loves working with local and national governments, non-governmental organisations, private sector and academic institutions on identifying and addressing challenges related to the provision of public services, especially water supply and sanitation. The practical application and use of research findings, information and data is central to Marieke’s work. She has supported local governments and their partners in Ghana, Ethiopia and Rwanda, in using data to develop and implement robust master plans. Based on these experiences, and those of others, she developed a comprehensive resources base on district WASH master planning, including a Systems Academy course, which has been accessed and applied by various stakeholders. Districts and municipalities in Ghana, Ethiopia, and beyond now have and implement such plans, to ensure water and sanitation for all.

Over the years, she has played an active role in informing, facilitating and stimulating sector debate both at national and global levels. This has included the establishment of Ghana’s National Level Leaning Alliance Platform, and facilitation of the Thematic Group on Sustainable Services of the rural Water Supply Network (RWSN). In addition, she has co-authored several papers bringing together global experiences, lessons and insights on issues like small town water supply, utilitisation of rural water supply, and regulation of water and sanitation services. She has also been instrumental in developing and applying monitoring and evaluation frameworks for systems-strengthening projects and programmes, as well as strengthening sectoral monitoring systems. 

Her PhD, completed at Erasmus University Rotterdam in 2026, examined the political, cultural, and institutional factors that determine whether monitoring data shape decisions and accountability. This combination of academic and practical insights sets Marieke apart and enables her to contribute to systems strengthening, transition and change processes that ensure the provision of sustainable public services for all. 

 Some highlights

• Years and geography: Over 23 years of experience in a great variety of countries, including Bangladesh, Ethiopia, Ghana, Mali, Peru, Uganda, Rwanda, Zimbabwe.
• Types of clients/partners: The Blue Deal Office, FCDO, USAID, UNICEF, DGIS, CNHF, Osprey Foundation, BMGF, VEI  
• Flagship assignments: Managed the 1 million USD monitoring and learning part of the ONEWASH Plus project in 8 small towns in Ethiopia (2014-2020). Developed and manages a facility which provides (local) governments and its partners with access to case examples, tools, and resources for developing and implementing district master plans (2020-ongoing). Led strategic monitoring of FCDO’s WASH Systems for Health Project in six countries (2024-2026).  
• Global/institutional roles: Has (co-)authored many peer-reviewed publications, including on monitoring and data use, ‘utilitisation’ of rural water supply, and regulation. Published her PhD dissertation on the use of monitoring data in early 2026. 
• Languages:  Dutch (mother tongue), English (fluent), French (intermediate), Spanish (basic) 

Lemessa Mekonta began his career in groundwater development for human uses, which involves mapping groundwater occurrence and dynamics – learning to read what lies beneath the surface, and how it behaves. That instinct for going deeper than what is immediately visible has stayed with him. For two and half decades, it has shaped how he reads institutions and systems and discovers what’s holding them back. 

He works with governments and institutions across Ethiopia to build the planning, financing and operational systems that make essential services reliable over time – from developing district-wide master plans with local governments to strengthening town water utilities to withstand the pressures of a changing climate. His expertise spans urban and rural, formal utility and household self-supply, highland and pastoral lowland. He brings the same discipline to each: understand the whole system before designing any part of it.  

What makes Lemessa rare is a trajectory that most advisers lack. He started his career inside Ethiopia's government – as a geologist/hydrogeologist for Oromia's Water, Mineral and Energy Bureau, from junior to senior positions including as a department head for Water Resources management; while with government, Lemessa was also a board chair for a town water utility for five years. He then built and ran his own consultancy for seven years before joining Riva. He has worked inside every part of the system he now helps to reform, and understands what each sector needs, how each thinks, and where they fail to connect. He leads the national Agenda for Change coalition in Ethiopia – convening a collaboration of more than a dozen organizations, involving government, INGOs, multilateral and bilateral organizations around a shared approach to systems strengthening. He holds an MSc in Hydrogeology from Addis Ababa University, and a postgraduate certificate in Engineering geology and hydrogeology from the University of Tübingen, Germany; and he is based in Addis Ababa.  

A few highlights  

• 25 years of systems leadership across Ethiopia's water sector – spanning government, private consultancy and the NGO sector  
• Water resource development including mapping and construction with focus on groundwater for different uses 
• Research on Rural water supply operation and maintenance, including governance, supply chains and finance 
• Lead, Agenda for Change Ethiopia collaboration – convening 13 plus organisations including government and development partners around a shared systems strengthening approach 
• Co-chair national WASH finance working group 
• District-wide master planning with local governments, translating long-term visions for water and sanitation into life cycle costed, implementable roadmaps  
• Urban water utility strengthening– building the governance, financing and operational capacity that makes town utilities viable  
• Research on household self-supply and multiple use water services (MUS) as complements to formal systems – including published work on multiple-use water services in Ethiopia  
• MSc in Hydrogeology from Addis Ababa University, and postgraduate certificate in Engineering geology and hydrogeology from the University of Tübingen 
• Working languages: Afan Oromo, Amharic and English