About Us

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Who we are

AGS – Administração e Gestão de Sistemas de Salubridade, SA is a company focused on preserving the environment, operating along the entire water cycle. It works in areas from consultancy and the development of specialised engineering services to the management, operation and maintenance of urban water systems and treatment facilities.

It is a private company that was founded in 1988, with share capital of EUR 21,000,000.00, currently held by Marubeni. It operates mainly in Portugal and Brazil.

Marubeni Group

of Operation


Provision of services for operating and maintaining water supply systems and drainage and wastewater treatment systems, meeting the needs of its clients and finding the technical solutions most suited to each situation, focusing on the best cost-benefit ratio and compliance with all applicable requirements, particularly legal, regulatory, environmental and health and safety requirements.

Support engineering
for management entities

Development of solutions and software that bring gains in efficiency and generate value for water services the managing bodies of water services.
The efficiency and sustainability of water services is promoted through the implementation of engineering projects and tools to support urban water system management.
AGS keeps its focus on driving benchmark technologies and methodologies in the sector and establishing a knowledge platform with our partners.

Management of concessions and PPPs

AGS is one of the main players in the water sector, both nationally and internationally, as a result of its recognised expertise and experience in the management and operation of water supply and wastewater infrastructures, as well as for being part of a strong multinational group that operates in areas as diverse as the environment, energy, transport, infrastructure, textiles, navigation, food and much more, all over the world.

AGS bases the management of the Concessions and PPPs it is associated with on fundamental pillars, such as efficiency, effectiveness and quality, which are an integral part of all its projects, with a clear sense of leveraging the performance of its different associated companies, always focusing on carrying out its mission and contractual duties, as well as on the quality of the service provided.


Mr. Kazuaki

Chairman of the Board
of Directors

Mr. Yuta

Member of the Board
of Directors

Mr. Shunichiro

Member of the Board
of Directors

João Faria

Chief Executive Officer

Quality, Environment, Occupational Health and Safety Management System

Find here our Quality, Environment and Safety Policy and our Certifications.

Code of Ethics and Conduct

Find here our Code of Ethics and Conduct.

Plan for the Prevention of Risks of Corruption and related Infractions

Find here our Plan for the Prevention of Risks of Corruption and related Infractions.



Private Sector

Public Sector

International Market







São Tomé and Principe



East Timor