Selected to upgrade Thames Water treatment sites
Costain’s selection concerns water-treatment upgrades; the source distinguishes contractor selection from subsequent project delivery.
- Publish date: 2026-08-17
- Category: EPC Contractors
- Original source: Costain
- Reading time: 1 min
Reported scope and milestone
Costain: Costain’s selection concerns water-treatment upgrades; the source distinguishes contractor selection from subsequent project delivery.
Engineering interpretation
Selection is the contractor-appointment stage for treatment-site upgrades. Site-specific design, construction authorization and commissioning remain distinct delivery milestones.
Delivery responsibilities
The reported construction package defines the contractor’s delivery responsibilities. Civil works, building services, installation and commissioning may sit with different contractors or joint-venture partners. The full project budget is distinct from an individual contractor’s award. Contract award, site mobilization, practical completion and operation are separate milestones; planned dates and capacity remain prospective until the owner confirms delivery. The source-defined scope therefore matters when comparing a civil contractor, a construction manager and an integrated design-and-build provider.