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Cwm Taf Water Supply Strategy Procurement Scheme - Direct Procurement for Customers (DPC)

Dwr Cymru Cyfyngedig

Key dates and value

Status
Open
Submission deadline
4 Nov 2026
Published
28 Oct 2026
Estimated value
£556m
Location
Wales

Overview

Dŵr Cymru Welsh Water (DCWW) is the largest water and sewerage company in Wales and the sixth largest operating in England and Wales. Responsible for providing high-quality drinking water for over three million customers and for taking away, treating and properly disposing of the wastewater that is produced. DCWW is committed to securing water supplies for future generations while protecting the environment. Our primary responsibility is to operate, maintain and upgrade this large network of assets to ensure a safe and reliable drinking water supply and to deal effectively with discharges so as to protect the environment. As part of its Cwm Taf Water Supply Strategy (“Cwm Taf WSS”), DCWW is seeking to progress a major investment project to design and build new water treatment works and develop an existing water treatment works (the Cwm Taf WSS Procurement Scheme). The Cwm Taf WSS Procurement Scheme has been designated under Ofwat's Direct Procurement for Customers (DPC) programme. The Cwm Taf WSS Procurement Scheme is intended to be delivered primarily on two separate sites, one located in the vicinity of Merthyr Tydfil, South Wales and one within the boundaries of the Bannau Brycheiniog National Park. DCWW is looking to appoint a Competitively Appointed Provider (CAP) utilising the Direct Procurement for Customers (DPC) model. The scheme includes the Design, Build and Finance (DBF) of a new water treatment works on an agricultural land at Dan-y-Castell Farm, along with a raw water pumping station at Pontsticill (referred to as the Dan-y-Castell project) and Llwyn-onn Water Treatment Works upgrade (referred to as the Llwyn-onn project). The Cwm Taf WSS Procurement Scheme is therefore a two-site project comprising Dan-y-Castell (currently with an estimated value of £434,400,000 including VAT / £362,000,000 excluding VAT) and Llwyn-onn (currently with an estimated value of £232,800,000 including VAT / £194,000,000 excluding VAT). The Cwm Taf WSS Procurement Scheme inc

CPV codes

  • 65100000 Water distribution and related services
  • 71322000 Engineering design services for the construction of civil engineering works
  • 45231100 General construction work for pipelines
  • 45231300 Construction work for water and sewage pipelines
  • 45240000 Construction work for water projects
  • 45252126 Drinking-water treatment plant construction work
  • 66122000 Corporate finance and venture capital services
  • 71541000 Construction project management services
  • 66100000 Banking and investment services
  • 45200000 Works for complete or part construction and civil engineering work
  • 45000000 Construction work
  • 71540000 Construction management services
  • 71500000 Construction-related services

About the buyer

Dwr Cymru Cyfyngedig has published 17 tender notices since 30 Oct 2023, with a combined advertised value of £3.5bn. 7 of them are currently open.

How to apply

Tender documents and submissions are handled on the official portal (Sell2Wales). Register there to download the documents and submit your response before the deadline.

View the original notice on Sell2Wales

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Source: Sell2Wales. Contains public sector information licensed under the Open Government Licence v3.0. Details may change; always check the original notice before bidding.