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    ContractsCwm Taf Water Supply Scheme - Water Treatment Works Design, Build and Finance Opportunity
    Open tender

    Cwm Taf Water Supply Scheme - Water Treatment Works Design, Build and Finance Opportunity

    Contract value
    £556m
    Published 24 Jul 2026

    Welsh Water is seeking a Competitively Appointed Provider to design, build and finance two major water treatment infrastructure projects in Wales valued at approximately £556-667 million combined, with market engagement beginning now and contract award anticipated in late 2028.

    🇬🇧United Kingdom· WalesPublished 24 Jul 2026· 2 months agoviaFind a Tender
    Contract value
    £556m
    Published 24 Jul 2026

    Decision brief

    4 fields
    • Contract value
      £556,000,000indicative
      Pounds sterling
    • Closing date
      Rolling
      No closing date published
    • Sector
      Construction
      Browse related listings
    • Location
      🇬🇧United Kingdom
      Wales

    Lifecycle

    Open

    Open tender — no closing date published. Opened 2 months ago.

    24 July 2026
    Open tender · no closing date published

    Brief

    Dŵr Cymru Welsh Water is seeking a Competitively Appointed Provider (CAP) to design, build and finance two major water infrastructure projects in Wales under the Direct Procurement for Customers (DPC) programme. The Cwm Taf Water Supply Scheme comprises two sites: the Dan-y-Castell project (new water treatment works and pumping station near Merthyr Tydfil, estimated at £362-434 million) and the Llwyn-onn project (water treatment works upgrade in Bannau Brycheiniog National Park, estimated at £194-232 million). The projects include water treatment works, pumping stations, transfer pipelines, treated water storage, and environmental mitigation measures. Welsh Water is conducting market engagement activities to seek feedback from investors, lenders, contractors, designers and other delivery organisations interested in supporting this sustainable infrastructure investment. The competitive procurement process is expected to conclude with CAP contract award in late 2028, followed by detailed design, construction, testing and commissioning. This notice invites interested suppliers to participate in market engagement events and provide input on the emerging commercial and financing models.

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    Take action
    View tender on sourceFind a Tender

    Full notice and submission process on the publisher's site

    Publisher
    UK Cabinet Office
    Licence
    OGL v3.0
    Source
    find-tender.service.gov.uk
    Record ID
    ocds-h6vhtk-06d32b
    DC
    Buyer
    Dwr Cymru Cyfyngedig
    Sector
    Construction