Water
Colas installs, rehabilitates, and connects both drinking water and drainage networks on behalf of local authorities, developers, and industrial players.

Designing and deploying reliable and more sustainable water networks
Water is pivotal in maintaining equilibrium across the world’s regions: a vital resource, an environmental challenge, and a resilience lever in the face of climate change.
At Colas, we’re committed to managing water networks on behalf of local authorities, industrial companies, and developers. Whether it's bringing drinking water to users or managing wastewater sustainably, we design and build robust, adaptable, and environmentally friendly infrastructure.
In the field, our teams combine technical expertise and operational excellence to guarantee efficient, sustainable, and safe networks in all settings, even the most sensitive.
Meeting local water management challenges
Water transport infrastructure is vital to the day-to-day life of communities. Colas deploys its expertise to:
- ensure the continuity of essential public services (drinking water, wastewater drainage),
- meet environmental and regulatory requirements,
- operate with precision in complex or occupied environments,
- ensure the sustainability and resilience of networks against the backdrop of climate change.
An organization adapted to technical and regulated projects
Colas deploys its teams in strict compliance with technical, safety, and environmental standards, guaranteeing:
- fluid coordination with operator services,
- optimized management of project phases to limit service disruption,
- capacity to operate in dense urban zones or sites with difficult access,
- project engineering adapted to the nature of the ground, network flow, and hydraulic risks.
Varied references
Colas’ activities cover:
- projects involving primary drinking water or drainage networks,
- pipe rehabilitation or renewal works,
- connections for mixed development zones, eco-districts, and industrial sites,
- services on behalf of local authorities, contractors, and network operators.
Do you have a water network development or renovation project?
Contact our teams for customized technical and environmental support.
