Accueil » Areas of expertise » Drinking water, sanitation and waste management

The Sustainable Development Goals encourage the adoption of approaches focusing on services that must be universal, fair and sustainable. Despite significant progress, there is still a considerable need for improvements in terms of access and above all in terms of quality.

GRET works to support fair, sustainable, quality access to the essential services of drinking water supply, sanitation and waste management in developing countries. Whatever the technical and governance structures proposed, GRET considers these three areas from both a technical and a social point of view, in order to propose solutions suited to the specific issues of each geographic region.

This approach to essential services is based on three correlated principles: strengthening of public and private  stakeholders in their capacity to conduct their missions (project ownership, management and regulation of services); organisation of inclusive governance  methods for these services; and the development of technical solutions that are coherent with the local context.

GRET’s teams mobilise various types of know-how, from technical engineering to social intermediation, via support for businesses or coordination of contracting processes. These extensive skills enable them to support stakeholders involved in supply of drinking water, sanitation and waste management in their missions – from strategic planning to regulation of services, via defending users or management. The means mobilised combine multi-annual projects, studies and consulting missions, participation in networks and knowledge production.


    Capacity building of urban service providers in Myanmar

    Myanmar | 01/09/2017 - 30/09/2020

    Rosamur project is implemented within the framework of a capacity building program initiated end of 2015, and aiming to improve the quality of environmental services in Myanmar cities through the establishment of a network of ...

  • Amarapura |

    Improving water and sanitation services in Mandalay City (Myanmar)

    Myanmar | 01/12/2016 - 22/12/2019

    The project aims at providing access to water to 2,000 households of Mandalay City (Amarapura Township) and at implementing incentive measures for households to connect to the networks. It also consists in reinforcing capacities of the municipality ...

  • Chin and Rakhine States are identified as very vulnerable States in Myanmar, weakened by frequent disasters and confronted to major local challenges. GRET and its partners are implementing an integrated and connected project in 3 Townships of Union ...

  • Wash Un-habitat |

    Data collection on urban services

    Myanmar | 11/05/2016 - 11/07/2016

    The present assignment takes place within the framework of a project implemented by UN-Habitat. This project aims at reinforcing the capacities of urban managers in major Myanmar cities through the provision of trainings and the support for the ...

  • PRO-3 |

    Sustainable Solid waste management in Vinh Phuk Province

    Vietnam | 01/03/2016 - 28/02/2019

    Environmental challenges in Vietnam related to domestic or industrial waste are considered as accurate issues for the coming years due to growing cities and industrial development. Facing a lack of available land, rural towns have difficulty in growing, ...

  • The rate of access to potable water supply system in Cambodia is particularly low regardless the existence of numerous private water operators. 21% of Cambodian have access to domestic piped water supply and only 7% in rural area. ...

  • Gicod |


    Congo | 17/12/2015 - 16/12/2018

    In recent years, the city of Dolisie has been experiencing problems with waste management: illegal dumping, obstruction of roads and canals, etc. Faced with these issues, the Municipality called on pre-collection companies and associations, but did not manage ...

  • En zone Sahélienne, malgré une baisse générale de la pluviométrie, on constate des épisodes pluvieux plus intenses générant une augmentation des ruissellements. On parle alors de "paradoxe sahélien". De nombreuses agglomérations et villes secondaires de la région sont touchées, ...

  • ST-WSP |

    Technical standards for small piped water supply in Cambodia

    Cambodia | 01/06/2015 - 31/08/2016

    Since the last 10 years, the Government of the Kingdom of Cambodia is working to improve access to drinking water. The Ministry of Industry and Handicraft (MIH), which oversees the management networks distribution water supply for urban areas ...

  • Filipa |

    Support for waste pre-collection systems in Brazzaville (Congo)

    Congo | 01/07/2014 - 30/06/2016

    Support for waste pre-collection systems in Brazzaville (Congo) Brazzaville, the capital of Congo, has a population of over 1.5 million people. The increase in the population generated an increase in the quantities of waste produced, which is often ...


France : Université AgroParistech, Laboratoire d’étude et de recherche sur l’économie, les politiques et les systèmes sociaux de l’Université de Toulouse, Institut National des Sciences Appliquées de Lyon, Ecole Nationale des Sciences de l’Ingénieur de Limoge, Centre Francophone de Recherche Partenariale sur l’Assainissement, les Déchets et l’Environnement.
Haïti : Université Quisqueya,

Institutions publiques et collectivités locales

Laos : Département de l’Habitat et de la Planification urbaine (DHUP), bureau de régulation de l’Eau Potable (WASRO), Société des Eaux de la Capitale Vientiane (NPNL), Municipalité de Vientiane, provinces de Vientiane, de Bolikhamxay et de Xayabouri;
Sénégal : Agences régionales de Développement (ARD) et directions régionales de l’Hydraulique et de l’Assainissement (DRHA) de Louga, de Saint Louis, de Tambacounda et de Matam, Municipalité de St Louis, Conseil Régional de Saint Louis, Ministère en charge de l’Hydraulique;
Cambodge : Ministère de l’Industrie, des Mines et de l’Energie, Régie des eaux de Kampot, Administrations Provinciales de Kampot, Kandal, Takeo et Kratie ;
Mauritanie : Autorité de régulation de l’eau, communes d’Aleg, Boghé, Dar El Barka, Keur Macène, Magtaa Lahjar, N’Diago, Nouakchott, Rosso, Tekane, Ministère chargé de l’Environnement et du Développement Durable, Direction Nationale de l’Hydraulique, Directions Régionales de l’Hydraulique et de l’Assainissement du Trarza et du Brakna ;
Madagascar : ministère de l'Eau, Jirama, Autorité nationale de l'Eau et de l'Assainissement (Andea), Directions régionales de l'eau de l'Atsinanana, du Vakinankaratra et de l’Analan’jirofo, les communes d'Ambohibary, Anjoma Ramartina, Ambohimasina, Ambano, Ambohidranandriana, Ampetitatafika (Analamanga), Foulpointe, Mahatsara, Mahambo et Sainte-Marie.
Haïti : mairie de Port-au-Prince, mairie de St Louis, CTE RMPP, Direction nationale de l’Eau potable et de l’Assainissement, Office régional de l’eau potable et de l’assainissement (Sud et Ouest) ;

Opérateurs/ONG/Bureaux d’études

Burkina Faso : Adae et Fauereb ;
Cambodge : VBNK, SCE ;
Haïti : CAEPA St Louis du Sud, Komite Dlo de Port-au-Prince, Fekod, Snelak ;
Madagascar : Frères Saint Gabriel et Taratra, Enda ;
Laos : WTA, SCE ;
Mauritanie : GIE Zazou, Tenmiya et Ecodev ;
France : Aquassistance, Waterdev, Le Partenariat;

Collectifs et Réseaux

France : Coalition Eau, PS Eau, PFVT.
Laos : Sous-groupe de travail sur l’eau, l’assainissement et l’hygiène (WASH)
Madagascar : comité Diorano WASH, réseau Ran’Eau


Veolia, Suez-Environnement.

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