Operating in the most demanding environments
Eiffage Génie Civil works alongside you on all your hydraulics programmes, from water transport to discharge and from flood control to power plant building, in urban and rural environments. We operate in France and worldwide, for both public and private customers.
We boast an integrated design and engineering department ensuring all-round comprehensive support, from the beginnings of a project to its delivery. Our processes include sizing calculations, technical adaptations, costing and implementation plans and methods, and take all your needs and imperatives into account: water treatment (transfer, drinking water treatment, sea water desalination), network construction and repairs, irrigation and flood control, leakage detection, tank construction and equipment and fire defence networks (sprinklers).
We operate in France and worldwide, for both public and private customers, on all structures, including hydropower plant equipment (penstock pipes, headrace tunnels); reservoirs; locks (gates and valves); dams (water retention and storage, spillways); water towers; pressurized networks; drinking water interconnections; delivery stations; water intake; pumping, drinking and rain water treatment and water purification plants; swimming and leisure pools, and white-water stadiums.
Hydraulic engineering landmark projects
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Flood control pumping station in Mauritius
Flood control pumping station in Mauritius
Design and build project for a flood protection system on the Legend Golf Course in Mauritius.
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Maquis de Saffré storage tank (44)
Maquis de Saffré storage tank (44)
Supply, installation and commissioning of equipment for the Maquis de Saffré stormwater basin in Nantes, including check and control valves, screens, drainage and bilge pumps, vacuum cleaning system, ventilation, electricity and automation.
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Saint-Gildas-des-Bois tower reservoir (44)
Saint-Gildas-des-Bois tower reservoir (44)
The reservoir has capacity of 2,500 m3 on a 14 m tower. It was built of white cement concrete with a prestressed concrete tank, and boasts architectural LED lighting, with a colour variation system.
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Grand-Santi reservoir (French Guiana)
Grand-Santi reservoir (French Guiana)
This reservoir with its 900 m3 capacity on a 6 m tower was built on an isolated site with no public transport access. Supplies were brought by canoe on the Maroni river.
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Ariane 6 – Kourou
Ariane 6 – Kourou
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Irrigation Units - Reunion Island
Irrigation Units - Reunion Island
Nine 400-kW irrigation units.
Flow rate 350 m³/h TDH - 267 mWC.
Hydrotech in La Réunion
Hydrotech specializes in the water cycle: installation of drinking water and wastewater networks, pumping equipment and civil engineering. Based in Reunion Island, the company operates throughout the island, as well as in the Indian Ocean (Seychelles, Mayotte and Mauritius via their subsidiary TWS). Its integrated design office enables it to define and carry out complex turnkey projects for public and private industrial clients.
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Pipes: drinking water, waste water
Whether it's new or renewal of drinking water and wastewater networks (cast iron, HDPE, PVC of all diameters), Hydrotech's teams bring their know-how and their contribution to the improvement of the environment.
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Hydraulic engineering: electromechanical and pumping equipment
With its recognized expertise, Hydrotech designs and manufactures electromechanical and pumping equipment for turnkey installations: drinking water booster, drinking water treatment plant, drinking water reservoir, irrigation station, lifting station, pumping station.
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Civil engineering: reservoirs, engineering structures, treatment plant...
Construction of reservoirs, engineering and hydraulic structures, water treatment plants and industrial buildings are the daily work of the company's civil engineers.
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After sales service / Maintenance and trading
The After-Sales Service/Maintenance teams carry out, with flexibility and reactivity, all over the island, the upkeep, maintenance, troubleshooting and repair of installations or equipment: pumps, pumping stations, booster pumps, water purification and treatment plants.
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Why choose Hydrotech's teams in La Réunion ?
- Studies carried out by our own engineers and technicians in-house (2D and 3D plans)
- Sale and rental of all brands of equipment: pumps (metering, lifting, pressure boosting), instrumentation (level sensor, probe, sensor), generator, hydromechanical equipment (valve, flap, suction cup), hydrocarbon separator, decanter, media, filtering cartridge...
- Maintenance and control of fire hydrants - Water analysis (process, AEP, EU) - Electromechanical repair workshop (pump, motor...)
- An on-call team is available for any emergency
Singrobo-Ahouaty hydro power development project on the Ivory Coast
This design and build project involving Eiffage Génie Civil and Eiffage Énergie Systèmes is located on the Bandama River between Abidjan and Yamoussoukro. It includes building a riprap and concrete composite dam, flood spillway, plant to house the turbines, discharge channel, switchyard, line connecting the power station to the network, temporary facilities and access roads.

Do you have a project?
Our teams are ready to help you with your project in mainland France and overseas (Reunion Island, Mayotte, French Guiana, French Caribbean and Polynesia) and worldwide (Senegal, Ivory Coast, Togo, Djibouti, Madagascar, Mauritius, Seychelles).