Filipe de Mello Sampaio Cunha

Director at the Brazilian Water and Sanitation Agency- ANA (2022-2025), Filipe

Sampaio is a Political Science graduate from University of Brasilia – UnB and has a

Public Management and Water and Sustainability Management post-graduation.

He has extensive experience in the public sector especially in public, strategic and

risk management, public policies, project and process planning, and legislative

assistance. Since 2016 has been collaborating with the National School of Public

Administration (Enap), teaching courses in public management.

He is a Public Management Analyst, from the Federal Prosecution OƯice and worked

in the Chief-Prosecutor OƯice from 2013 to 2020. In 2020 joined the Special

Advisory team to the Ministry of Economy until 2022 when he was appointed by the President to become a Director at ANA.

Florent Chazarenc

Florent Chazarenc holds a Ph.D. in environmental engineering and serves as a senior researcher and group leader at INRAE, within the REVERSAAL research unit based in Lyon, France. INRAE, France’s National Research Institute for Agriculture, Food, and Environment, was established in 2020 following the merger of INRA (National Institute for Agricultural Research) and IRSTEA (National Institute for Science and Technology for the Environment and Agriculture). For over 30 years, INRAE has been tackling key challenges related to sustainable agriculture, land management, and water resource management.

At REVERSAAL, Dr. Chazarenc focuses on research aimed at reducing, reusing, and recycling resources from wastewater. His expertise lies in low-energy wastewater treatment systems and resource recovery, particularly the innovative recovery of phosphorus (P) and nitrogen (N) from industrial and domestic wastewater, a field in which he has been actively involved for over 20 years. More recently, his work has expanded to include carbon capture and valorisation projects. Dr. Chazarenc has published 60 peer-reviewed papers and is the former secretary of the SG Group on Treatment Wetland Systems for Water Pollution Control. He also chaired the 14th IWA Specialized Conference on Small Water and Wastewater Systems, held in Nantes in 2017.

Günter Langergraber

Günter Langergraber is Senior Scientist at the Institute of Sanitary Engineering and Water Pollution Control at the University of Natural Resources and Life Sciences Vienna (BOKU University) with more than 25 years' experience in wastewater and sanitation related research.

Besides his work on treatment wetlands and nature-based solutions, he has been promoting resources-oriented sanitation systems for 20+ years. Günter has been involved in projects related to resources-oriented sanitation in various developing countries (e.g., various African countries and India). 

Günter holds a PhD in Civil Engineering and Water Management and as habilitation (professional dissertation) in the field of Sanitary Engineering, both from BOKU University. He is and was active in various positions in the International Water Association (IWA). Since 2023 he is (again) Chair of the IW Specialist Group on Resources-Oriented Sanitation (after a first period as Chair from 2010 to 2016). Günter was one of the key persons behind having joint conferences of the SWWS and ROS SGs (the first joint SWWS and ROS conference was held in 2011).