Building blocks
Supervisory board

WASTE’s Independent Supervisory Board

The Supervisory Board supervises the policy and strategy of the management and the general course of affairs at WASTE. In addition, the Supervisory Board acts as an advisory body to the management.

The Supervisory Board is composed of the following persons:

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Rolien Sasse

Rolien Sasse is an international consultant, mediator and strategic advisor to the Water, Peace and Security partnership. Member of the Board of Water for Life Foundation. She previously held roles as: Global Head of Humanitarian Campaigning (interim) at Oxfam, Executive Director of Simavi, Board member of Netherlands Water Partnership and member of the Steering Group of Sanitation and Water for All.


Adriaan Mels

Adriaan Mels is the Regional Director Asia at Vitens Evides International (VEI), Program Manager WaterWorX, WASH expert. In the past, he held roles as: Team Lead of Urban Environmental Management Group at Wageningen University, Lecturer IHE Delft, International Consultant LeAF, PhD Environmental Technology

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Nico Terra

Nico Terra has over 35 years of experience in managing professional service organisations in their development. The last 10 years, he focused specifically on NGOs in the field of water, sanitation and hygiene (WASH) with expertise in: strategy development and (change) management. He works as consultant and interim manager, developing and managing large scale programmes in the field of water and sanitation services for the poorest in Africa and Asia.

In the past, he was CEO of IRC International Water and Sanitation Centre and director the Dutch WASH Alliance/WASH Alliance International. He currently is Board Member of the Max Foundation, an NGO focusing on providing water and sanitation services in Bangladesh and Ethiopia.

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Dr. Ljiljana Rodić-Wiersma

Dr. Ljiljana Rodić-Wiersma has over 25 years of experience in research, higher education and capacity building in urban environmental management and sustainable development, covering multitude of countries in all income levels, on five continents. For both her publications and teaching, she has received various international prizes. Ljiljana has worked for UNEP and UN-HABITAT, including the 2015 “Global Waste Management Outlook” and 2017 advisory work on methodology for monitoring of the UN SDG 11. She has been an expert evaluator of research and innovation proposals to the European Commission, DANIDA and Swiss National Science Foundation. Currently she is focusing on hazardous chemicals in circular economy.


Erlijn Sie

Erlijn Sie has 15 years of experience working with multi- nationals and an equivalent number of years leading and growing social ventures. She is the co-founder of Micro- credits for Mothers and Credits for Communities and was Managing Director of the Banking with the Poor Net- work and HandsOn Microfinance. Currently, she works at Ashoka – the world’s largest international network of social entrepreneurs – with blue chip companies to trans- form business into a force for good through collaboration with social innovators. Erlijn has devoted her career to contributing to a more just and inclusive economy. Erlijn holds two master’s degrees in management sciences and Asian Studies.