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    ContractsCwm Taf Water Supply Strategy - Water Treatment Works Design, Build and Finance Project
    Open tender

    Cwm Taf Water Supply Strategy - Water Treatment Works Design, Build and Finance Project

    Contract value
    £556m
    Published 28 Oct 2026

    Welsh Water is seeking a private sector partner to design, build, and finance two major water treatment works as part of the Cwm Taf Water Supply Strategy, a £667 million DPC-designated infrastructure project.

    🇬🇧United Kingdom· WalesPublished 28 Oct 2026· TodayviaFind a Tender
    Contract value
    £556m
    Published 28 Oct 2026

    Decision brief

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

    Lifecycle

    Open

    Open tender — no closing date published. Opened today.

    28 October 2026
    Open tender · no closing date published

    Brief

    Dŵr Cymru Welsh Water is seeking a Competitively Appointed Provider (CAP) through the Direct Procurement for Customers (DPC) programme to design, build, and finance a major water infrastructure investment project. The scheme comprises two sites: the Dan-y-Castell project (new water treatment works and raw water pumping station near Merthyr Tydfil, estimated at £434.4 million including VAT) and the Llwyn-onn project (water treatment works upgrade within Bannau Brycheiniog National Park, estimated at £232.8 million including VAT). The total project scope includes water treatment works, pumping stations, transfer pipelines, treated water storage, and environmental mitigation measures. This is a major infrastructure development designed to secure sustainable water supplies for over three million customers while supporting Welsh Government wellbeing and environmental objectives. Market engagement activities are ongoing, with a Meet The Buyer event scheduled for 10 November 2026 and a data room available before the planned procurement launch in Q1 2027. Contract award is anticipated in late 2028, followed by detailed design, construction, and a 12-month Reliability and Optimisation Period. All dates and values are indicative. This notice is preliminary market engagement only and does not constitute a formal call for competition or procurement commitment.

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    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-079266

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    Buyer
    Dwr Cymru Cyfyngedig
    Sector
    Energy & Utilities