Committed to HQE®

The High Quality Environmental (HQE®) scheme sets out a set of rules common to all construction companies, the central aims of which are to :


  • minimise the impacts of building on its environment
  • maximise user comfort and health


l'usine de traitement d'eau potable de Bois-Joli en Ille-et-Vilaine.HQE® is a voluntary scheme applicable to building construction and renovation. It reflects the wishes expressed by the contracting authority to control the impacts of the building on its environment and future users throughout its useful life. It provides for the formal integration of environmental goals focused on the 14 targets* defined by HQE® Association.


As an HQE® pioneer, the Saur Group has used a number of its pilot operations to contribute to adapting the French ‘NF Bâtiments tertiaires – Démarche HQE®’ standard for service-sector buildings for use with the kinds of industrial building used by the water industry. As part of this contribution, Stereau has designed and built a model plant that will act as the reference point for preparing the future water industry HQE® construction benchmark: the drinking water treatment plant at Bois-Joli in the Ille-et-Vilaine region.


The Stereau approach to HQE®

Depending on the goals set, an HQE® plant may generate electricity, heat or even reusable water. It must therefore be economical in terms of operating costs and become a source of energy. Stereau drinking water and wastewater treatment processes are recognised by  AFAQ-AFNOR for their eco-friendly design.


For local authorities, an HQE® plant lends tangible credibility to Agenda 21 commitments and sustainable development policies. Stereau supports local authorities and companies in their HQE® commitments by:


  • adapting the French NF Bâtiments Tertiaires – Démarche Haute Qualité Environnementale (HQE®) standard for use in the water industry, with particular emphasis on plants eligible for pilot site status as defined by Certivéa, the HQE certification body
  • supporting local authorities and companies obtain sustainable development accreditations granted by independent third-party bodies on a scale offering future development developing technical innovations for energy generation and water reuse
  • limiting greenhouse gas emissions through the specific selection of processes and reagents that comply with Regional Climate Plans



Stereau social commitment


  • Ergonomic ease-of-use in operation : we are committed to ensuring that ergonomic operation and operator comfort and safety are addressed and incorporated at every stage of our projects
  • Construction as an opportunity for training : supporting jobs and helping more people into work is a major sustainable development challenge. It enables construction companies to meet their growing needs, at the same time as helping regions to achieve their economic development targets