Sustainable water management

  • Deux ouvriers du bâtiment en gilets haute visibilité marchent dans un tunnel de béton gris en construction, avec un grand conduit jaune au plafond et un drapeau américain suspendu à l'équipement au fond. Le sol est humide et boueux.

    Ensuring safe water transfer

    We design tunnels that can collect, drain and convey water to protect both natural and man-made environments.

  • Un bâtiment moderne avec une façade de panneaux verticaux gris et pastels transitionnant vers des motifs géométriques verts, surmonté de plusieurs tours de refroidissement grises. Au premier plan, un étang triangulaire est entouré d'herbe verte et d'un chemin en béton menant à un talus paysager sous un ciel bleu nuageux.

    Efficient storage for better water treatment

    We build structures, often underground, specifically designed to store water ahead of treatment, which allows for sustainable resource conservation.

Our expertise

  • Vue panoramique du fleuve Potomac avec des rameurs, bordé par les bâtiments historiques et les ponts de Georgetown sous un ciel lumineux aux couleurs chaudes d'automne.

    Finding solutions to meet water management challenges

    We design infrastructure that address natural resource management challenges, factoring in geological, urban and environmental constraints. Every project we take on is designed with its end use in mind as we safely and sustainably collect, store and transfer water.

  • An aerial view reveals a vast industrial construction site next to a blue river, featuring a large red crane, conveyor systems, concrete processing tanks, and numerous stacks of grey precast segments, all framed by vibrant green, yellow, and red autumn trees under a clear sky.

    Expertise in complex underground structures

    Drawing on our many years of experience, we manage all excavation techniques – from traditional methods to tunnel boring machines – to construct structures of all sizes. On the Pawtucket project in the United States, a 3.5 km tunnel stores rainwater, wastewater and industrial effluent prior to treatment.

  • Un bâtiment moderne avec une façade de panneaux verticaux gris et pastels transitionnant vers des motifs géométriques verts, surmonté de plusieurs tours de refroidissement grises. Au premier plan, un étang triangulaire est entouré d'herbe verte et d'un chemin en béton menant à un talus paysager sous un ciel bleu nuageux.

    Adapting to specific local needs

    We design and build reservoirs and basins that have been calculated for effective water flow regulation. In Villejuif in the south of Paris, a 50,000 m³ semi-underground reservoir stores drinking water with minimal visual impact on the surrounding environment.

  • Un chantier de construction s'étend au bord de l'eau, avec des équipements et des matériaux bâchés, sous un ciel bleu éclatant parsemé de nuages blancs et gris où filtrent des rayons de soleil.

    Protecting the health of aquatic environments

    Our projects play a role in preventing waste from being discharged directly into the natural environment. In Washington DC, the Potomac River tunnel will collect excess water and prevent the bay from becoming polluted, which will lead to a lasting improvement in water quality.

  • Un croisement de tunnels souterrains en béton gris, où le sol humide reflète des lumières fluorescentes blanches ainsi que des lumières vives vertes et rouges.

    Maximising performance throughout the entire life cycle

    From design through to operation, we address sustainability and performance needs to deliver long-term, efficient infrastructure.

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Infrastructure designed to protect water resources

We design and build civil engineering structures for storing and transferring water, which play a crucial part in managing natural resources.

Infrastructure systems consisting of drainage tunnels, basins, reservoirs and associated treatment facilities are designed to collect, transport and store rainwater, wastewater and industrial effluent before treatment. Such projects address the growing challenges posed by extreme weather events, by urbanisation and by the conservation of natural environments.

In Hong Kong, for example, a 10.5-kilometre tunnel drains stormwater and discharges it directly into the sea, which greatly reduces the risk of flooding. The sustainable solutions we develop are designed according to local needs and requirements, and are always intended to serve the interests of the region and its residents.

An aerial view reveals a vast industrial construction site next to a blue river, featuring a large red crane, conveyor systems, concrete processing tanks, and numerous stacks of grey precast segments, all framed by vibrant green, yellow, and red autumn trees under a clear sky.

High technical performance and low environmental impact

Constructing underground structures is complex, requiring advanced expertise in tunnelling techniques and close coordination between specialists. On the Pawtucket Tunnel project in the United States, the team can adapt to varying geological conditions and ensure the safety of the works thanks to a dual-mode TBM (tunnel boring machine).

This infrastructure plays a key role in conserving water resources. It enables the temporary storage of excess water, prevents the discharge of pollutants and optimises the operation of wastewater treatment plants.

We are committed to “building for life”; this is reflected in our development of sustainable water infrastructure designed for low environmental impact and to support local communities in addressing climate change and water management challenges.

Une énorme machine de forage de tunnels (TBM) blanche, avec une tête de coupe rouge, blanche et bleue au premier plan, est préparée sur un site industriel. Un grand portique "HERRENKNECHT" est visible en arrière-plan sous un ciel dégagé.
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