Groundbreaking of the Wattrelos Wastewater Treatment Plant
Stereau, alongside the Métropole Européenne de Lille (MEL) and its partners, is launching the extension and modernization of the future Wattrelos–Leers wastewater treatment plant, a major project to strengthen wastewater treatment performance and contribute to the ecological transition of the region.
Our expertise
Engineering and project management
A comprehensive and optimised design of water treatment facilities while ensuring cost-effectiveness, timely delivery, and environmental issues.
Cutting-edge technologies
A wide range of technical solutions and innovative services designed to improve plant performance and minimize environmental impact.
Consulting & Services
Tailored services to modernize existing structures and optimize their technical and environmental performance over time.
Our achievements

Join Stereau
and be part of the Mission Water
movement
In a world undergoing water, ecological, and digital transition, where everyone is seeking a meaningful job, Stereau aims to welcome, support, and develop all talents by offering sustainable career paths for everyone.
At Stereau, you will have the opportunity to work in a human-scalled company and tackle complex engineering challenges in the field of water, environment, and territorial development.
By joining the movement led by the Saur Group through
“Mission Water”, you will actively contribute to the protection and enhancement of this precious resource.