Stereau, the Saur group Engineering subsidiary, opens the new drinking water plant at Orly 2 on behalf of Eau de Paris

Stereau, the Saur group’s Engineering division, announces the inauguration of the new Eau de Paris drinking water production plant in Orly (Val-de-Marne). With a capacity of 150,000m3/day, this facility becomes Stereau’s largest drinking water treatment plant using the CarboPlus® micropollutant treatment solution.

Officially inaugurated by the mayor of Paris, Anne Hidalgo, and the Eau de Paris water authority on Thursday, June 29th, the new plant produces 300,000m3/day of water in two lots of 150,0000m3/day, securing the supply of high-quality drinking water for nearly 650,000 Parisians.

With this €45m-contract, awarded by Eau de Paris to the consortium(1) led by Stereau in 2018, the Saur group Engineering subsidiary reaffirms its ability to manage ambitious design-build projects for large treatment facilities in the Paris region.

Orly: a strategic place in the Eau de Paris supply plan
An essential link in the capital’s water supply, the Orly site supplies the south and part of the west of inner-city Paris, meeting a quarter of the capital’s drinking water needs. The site benefits from a raw water reserve, isolated from the Seine, which can provide up to two days’ autonomy in the event of pollution.

A facility embracing innovation to support the ecological transition
In addition to its successful aesthetic and environmental credentials, the Orly2 plant uses the latest cutting-edge drinking water treatment techniques for the treatment of micropollutants.
By using patented CarboPlus® technology, the new treatment process not only transforms water from the Seine into excellent quality drinking water free of micropollutants, it also increases the plant’s operating flexibility, while reducing consumption of energy and reagents. The use of regenerative micrograin activated carbon makes it possible to achieve very high efficiency in the treatment of micropollutants without producing any waste, thereby reducing the plant’s ecological footprint over the long term.

A worksite harnessing BIM (Building Information Modeling)
In order to best meet the needs of Eau de Paris, Stereau adopted BIM (Building Information Modeling) methodology. BIM is a collaborative method for managing construction projects which has revolutionized the construction sector. Based on a 3D digital model containing reliable and structured data, it can be used to design and build water treatment facilities, as well as maintaining their optimum economic and environment performance over time. Combined with Eau de Paris’s computerized maintenance management system, BIM has made it possible to incorporate the Orly 2 plant’s future operational and maintenance challenges.

Hugo Bardi, Chairman of Stereau and Managing Director of Saur Water Engineering:
“We are particularly proud to inaugurate the new Orly 2 drinking water production plant, which perfectly illustrates the challenges ahead in terms of water quality, the circular economy and the decarbonization of water treatment facilities. It is a fantastic example of a technological benchmark and the ambition shared by Eau de Paris and Stereau to support the ecological transition and sustainable water management for the benefit of Parisians.”