Bernard Collignon  Résultat de recherche d'images pour "logo linkedin rond"

Hydrogeologist, basic public services specialist
37 years of experience

Bernard Collignon has a doctorate in Hydrogeology and over 30 years’ experience of setting up, implementing, monitoring and evaluating local development, basic public service improvement and urban development projects in around fifty countries of Africa, Asia and Latin America. After fifteen years spent developing his professional experience (notably in the Congo, then in Algeria, where he lived for 10 years), he founded Hydroconseil in 1995, followed by Urbaconsulting in 2006. He was responsible for overseeing and strategically managing both companies until December 2016.

A renowned water resources specialist (and nationally accredited hydrogeologist), Bernard also has wide-ranging experience of carrying out technical audits and coordinating the reorganization of public companies operating within the water supply sector, as well as evaluating their technical and financial performances. He has worked extensively on promoting local companies working in the water supply and sanitation sector (SMEs, consulting firms, local water distribution companies, small informal operators). He has conducted studies and assessed the feasibility of implementing water supply and sanitation improvement projects in rural areas, small towns and unplanned settlements in around thirty countries, with his key areas of expertise including analyzing customer demand and examining institutional set-ups.

In addition to his role as an expert and company chairman, Bernard is also a lecturer and the author of numerous publications (books, scientific papers, cross-cutting studies, knowledge-sharing reviews). He is an active member of a number of professional organizations (ADP, AFH, pS-Eau, etc.).


Bruno Valfrey  Résultat de recherche d'images pour "logo linkedin rond"

Engineer, water supply and sanitation specialist, institutional expert

27 years of experience

Bruno Valfrey holds a degree in engineering from ENSMA and a Masters in sciences from the Université de Poitiers (1993). Bruno joined Hydroconseil in 1996 after having spent several years working as a resident project manager in Senegal (1993-1996). He was appointed Managing Director of Hydroconseil in 2007 and is also the co-founder of Urbaconsulting.

Bruno has over 20 years’ experience of assisting contracting authorities working within the basic public services sector (water supply, sanitation, solid waste collection). He has notably conducted studies and supervised the construction of water supply and sanitation infrastructure in a variety of countries in Africa and the Caribbean (Cape Verde, Senegal, Mali, Equatorial Guinea, Kenya, Mozambique, Mauritania, Tanzania, Burkina Faso, Niger and Haiti).

Along with his technical expertise, Bruno also has specialist knowledge of the institutional aspects specific to the water supply and sanitation sector, particularly those relating to setting up public service concession contracts. He has helped develop water and sanitation-related public policies and strategies in more than ten countries. He has also worked on formulating and evaluating over fifty projects and programs (most often as team leader). Bruno has facilitated workshops and conferences with water supply and sanitation sector stakeholders in a number of different countries (Mali, Senegal, Chad, Haiti, Cape Verde, Mauritania, Burkina Faso, Niger, etc.), focusing notably on the challenges of supplying water to small towns and unplanned urban settlements. His key areas of expertise also include monitoring (CSO, GLAAS, Blue Books, etc.).

In addition to his role as an expert and managing director, Bruno is also an experienced speaker and trainer and the author of around thirty publications (books, methodological guides, cross-cutting studies, knowledge-sharing reviews). He is an active member of a number of professional organizations (ADP, pS-Eau, ASTEE, IWA, SFE).

Cédric Estienne

Engineer, water supply and sanitation specialist
Managing Director of HYDROCONSEIL
24 years of experience

Cédric Estienne is an engineering graduate from the Ecole Nationale Supérieure des Arts et Métiers (ENSAM, Paris). He has over 20 years of professional experience, 16 of which he has gained working at Hydroconseil, whom he joined in 1999 after having worked as a resident project manager in Senegal (1996-1998). He also holds a degree in corporate management from the Institut d’Administration des Entreprises (IAE) in Paris.

In addition to his strong technical expertise - network studies, sizing pumping systems, sanitation facilities, designing civil engineering works, organizing work supervisions - Cédric specializes in providing technical assistance and training to improve the professionalism of local water supply and sanitation service management bodies (management committees, municipal utilities, SMEs, etc.). 

He has also worked with local authorities in Africa on a number of solid waste management projects (studies, implementation and evaluation). Working as team leader, institutional expert or sector specialist, Cédric has regularly helped coordinate the development of national water and sanitation policies and strategies (Morocco, Mauritania, Gabon, Cameroon, Haiti, Somalia, etc.).

The numerous assignments that he has carried out in Africa (Burkina Faso, Cameroon, Democratic Republic of Congo, Ethiopia, Gabon, Mali, Morocco, Mauritania, Mozambique, Niger, Uganda, Rwanda, Senegal, Sierra Leone, Somalia, Chad, Togo), Haiti, Nepal and Sri Lanka have provided Cédric with the skills to successfully manage projects by closely integrating all technical, institutional and socio-economic aspects.


Sadok Hidri-Hellmann  Résultat de recherche d'images pour "logo linkedin rond"

Economist and financial expert

19 years of experience

Having graduated with a degree in economics (Marseille, France), Sadok Hidri-Hellmann went on to specialize in environmental economics, obtaining a Masters from the University of York (UK). Prior to joining Hydroconseil, Sadok led numerous economic studies within the water supply and sanitation sectors of countries in Europe (the United King-dom, France, Italy, Germany, the Netherlands, Spain, Belgium, Bosnia-Herzegovina) and Latin America (Belize). His key areas of expertise include market studies, pricing, evaluating project costs, financial modeling of water sector companies and environmental impact assessments.

Since joining Hydroconseil in 2006, Sadok has worked on sector-wide approaches for financing the water supply sector and on the financial modeling of water supply and sanitation service delivery in a number of countries, including Benin, Burkina Faso, Cameroon, Cape Verde, Djibouti, Haiti, Morocco, Mauritania, Mozambique, Nigeria, Uganda, Palestine, Panama, the Philippines, Sri Lanka and Rwanda.


Audrey Crocker  Résultat de recherche d'images pour "logo linkedin rond"

Urban planner and basic public services specialist
Member of the HYDROCONSEIL Management Committee

12 years of experience

Audrey Crocker is a graduate of the Institut d’Aménagement Régional (Aix en Provence), the Institut de Sciences Politiques (Rennes) and the École Nationale du Génie Rural des Eau et Forêts (ENGREF), with degrees in both rural development and urban service management. Her main areas of expertise include urban planning policies and the planning and management of urban network services: solid waste management, transport and, more specifically, the water and sanitation sectors. Working on various projects in countries such as Pakistan, Madagascar and Uganda has enabled Audrey to consolidate both her knowledge of post-disaster contexts and her experience of using emergency strategies and development approaches for reconstruction and urban services.

Audrey joined Hydroconseil and Urbaconsulting in 2010, initially coordinating the monitoring and evaluation of a UNICEF-funded, government-led WASH program in DRC. Since then, she has worked on numerous other assignments identifying, implementing and evaluating urban development and basic public service projects (water supply, sani-tation and hygiene, solid waste management).


Yannick Pradelles  Résultat de recherche d'images pour "logo linkedin rond"

Doctor of public health, hygiene and sanitation specialist,
Resident technical assistant, in Mauritania

29 years of experience

Yannick Pradelles is a public health doctor with over 25 years’ experience of assisting contracting authorities working within the water supply, hygiene and sanitation sectors. Yannick’s professional experience has been gained mainly in west African countries (Burkina Faso, Mali, Guinea, Benin, Niger, Mauritania), working for a French NGO (EAST), international consulting firms (NIRAS, COWI, Ecopsis and Hydroconseil) and as an independent consultant.

Yannick has three key areas of expertise: social intermediation within water supply and sanitation projects (including CLTS and sanitation marketing); setting up project monitoring and evaluation systems; and institutional support. Yannick has developed this expertise by carrying out a range of activities including formulating, evaluating and implementing WASH projects and conducting studies. He has extensive experience of working as a resident technical assistant, providing contracting authority support to government agencies (2 years in Mali, 1 year in Mauritania and 7 years in Burkina Faso) and to local authorities (3 years in Burkina Faso and 2 years in Guinea). Over the course of his career, Yannick has developed specific skills in the fields of public finance management and sector-wide approaches

Yannick joined the Hydroconseil team in 2014. Based in Nouakchott, he is currently providing technical assistance to the National Directorate of Sanitation as part of the ‘5 wilayas’ program to improve access to water supply and sanitation in 5 of the country’s regions (a project jointly funded by the European Union and French Agency for Development).


Hoshyar Lahoorpoor  Résultat de recherche d'images pour "logo linkedin rond"

Engineer, water infrastructure improvement specialist

15 years of experience

Hoshyar Lahoorpoor is a water supply engineer graduated from ENSE3 (INPG). He studied both civil engineering and agricultural water engineering. Having worked mainly in the Middle East and Europe, he has over 11 years’ experience of assisting contracting authorities, supervising construction work, conducting needs assessments and carrying out institutional diagnostics in the water supply, sanitation and irrigation sectors. Prior to joining Hydroconseil in 2015, Hoshyar worked on a number of development projects, including integrated water resource management and water shortage management projects and programs to tackle climate change and also re-house former refugees in Iran. He also specializes in capacity-building through training and in providing institutional and technical support to improve the local management of water supply and sanitation services. The assignments that Hoshyar has completed have helped him to develop sound experience of managing multidisciplinary teams.


Charlotte Kalinowski  Résultat de recherche d'images pour "logo linkedin rond"

Legal expert and political scientist, sectorial governance specialist, design and management of water, sanitation and solid waste services

15 years of experience
Charlotte Kalinowski is a political science and public law graduate (Université Paris II – Panthéon Assas) with over 14 years’ experience of providing contracting authority assistance within the urban public services sector (water, sanitation and solid waste management).
Prior to joining HYDROCONSEIL in 2015, Charlotte spent six years working as the head of international relations for Europe’s largest sanitation authority (SIAAP), where she gained extensive sanitation sector expertise. During her time with SIAAP, she led cooperation projects in several countries in Africa, the Middle East and south-east Asia to increase access to sanitation and improve national and local sanitation services in Burkina Faso, Niger, Mali, Togo, Ethiopia, Lebanon, the West Bank, Vietnam, Laos and Cambodia.
Charlotte has also developed considerable local authority and service operator capacity-building expertise. She has conducted national sector studies (on solid waste and wastewater management) and legal studies on the set-up of the sanitation sector in Lebanon, Togo, Niger and the West Bank. Charlotte has drawn on her legal expertise to define sanitation service management frameworks and participate in national sector organization debates in Lebanon and the West Bank. In addition, she has organized and facilitated seminars and workshops for environment sector stakeholders in a number of countries (Togo, Niger, Lebanon, Vietnam ,Thailand, Republic of Congo & France).