Find a TenderPlanned procurementPreliminary market engagement notice
Published 24 Jul 2026, 12:50 BST

Official UK procurement notice

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

Authority: Dwr Cymru Cyfyngedig (Public body)

WorksAbove thresholdUtilities
Planned pipeline value£556,000,000pipeline notice, not a live tender
Tender notice expected Date not publishedfrom the planned procurement notice
Contract term 30 yrsends 30 Nov 2058 · starts 30 Nov 2028

What is being bought

Published requirement description

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 MerthyrTydfil, 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 £434,400,00 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 includes (but is not limited to):

-Water Treatment Works

-Pumping stations

-Transfer pipelines

-Environmental and mitigation measures

-Treated Water Storage

This notice seeks to inform the market of DCWW's upcoming market engagement activities for the Cwm Taf WSS Procurement Scheme and seek engagement from interested suppliers, including:

-a Market Engagement process focused on investors, lenders and organisations capable of providing institutional finance, to specifically seek feedback on the emerging commercial model and financing approach; and

-In-person Market Engagement events open to investors, lenders, contractors, designers and other delivery organisations interested in the Cwm Taf WSS Procurement Scheme.

Across these activities, DCWW is seeking engagement from organisations capable of supporting the delivery and financing of a secure, sustainable and value-driven solution for customers through this major DPC-designated infrastructure project. The engagement activities will support the ongoing development of the procurement and commercial strategies (and associated documentation) and will help inform the delivery of the Cwm Taf Water Supply Strategy and the sustainable and environmental objectives of the Welsh Government, including (but not limited to) the Wellbeing of Future Generations (Wales) Act 2015.

Following a competitive procurement competition, CAP contract award is anticipated to be late 2028. The CAP contract will progress the Scheme through detailed design, construction, testing and commissioning activities, including an anticipated 12‑month Reliability and Optimisation Period. The Scheme will then be completed to allow commencement of the DCWW managed operational term. All dates are indicative.

All values and dates set out in this preliminary market engagement notice are indicative. This notice is not a call for competition, a tender notice, or a commitment to procure

CPV: Banking and investment services · Construction management services · Construction project management services · Construction work · Construction work for water and sewage pipelines · Construction work for water projects · Construction-related services · Corporate finance and venture capital services · Drinking-water treatment plant construction work · Engineering design services for the construction of civil engineering works · General construction work for pipelines · Water distribution and related services · +1 more

The lotProcurement structure

single lot · no lot value published

Pipeline intelligence · planning stage: how this market runs before the tender is published

How Dwr Cymru Cyfyngedig buys Construction work for pipelines, communication and power lines, for highways, roads, airfields and railways; flatwork (CPV 4523), and who usually turns up

Dwr Cymru Cyfyngedig’s published record next to the market for the same work. Frameworks and DPS are left out: they draw different bid counts. Whole-market view: Construction work for pipelines, communication and power lines, for highways, roads, airfields and railways; flatwork (CPV 4523) →

1

How the contest usually goes

Winner shares use published awards; bid and price charts use contested lots.

How often do SMEs win?
i

How often small and medium firms win.

Share of awards where the winner’s size is known.

The counts under this question show how many awards have a known supplier size.

Last 36 months.

Buyer: 0 of 2 known-size awards · market: CPV 4523 · Wales (Cymru), n=19
0 of 279%

No small-firm winners recorded among this authority’s published awards in this sample.

How often do local suppliers win?
i

How often local firms win similar work.

Winners with a registered address in the delivery region, out of awards with a known address.

Local means the winner is registered in the region where that award was delivered. The market figure counts awards delivered in Wales (Cymru).

A local branch does not count if the registered address is elsewhere.

Last 36 months.

Buyer: 0 of 1 known-location awards · market: CPV 4523 · Wales (Cymru), n=48
0 of 177%

Most of this buyer’s recorded winners were registered outside the region where that award was delivered.

How long to a decision?
i

How long buyers here take to decide after bids close.

Middle value in days from the bid deadline to the award date, on competitions that published both.

Only decided tenders count, so slow ones still waiting are not in.

Last 36 months.

Buyer: no decision dates published · market: CPV 4523 · Wales (Cymru), n=6
—52 days

Half of these awards have an award date within 52 days of the bid deadline.

How often single-bid or direct?
i

How often work is awarded with no recorded rival.

Direct awards and tenders where every published lot count shows one bid.

Both shares are minimums: some awards have no bid count.

Thin markets produce this too; it is not proof of a tailored specification.

Last 36 months.

Buyer: at least 3 of 5 procurements with awards had no recorded rival · market: CPV 4523 · Wales (Cymru), n=51
60%33%

Direct awards or one recorded bid are common here. Check the route before spending time on a bid.

How many bids did past lots attract?

i

How many bids past lots received.

Each colour is a bid-count range. Only competed lots with a published count are included.

Past bids do not predict this tender.

Last 36 months.

This buyerNo bid counts published
The market10 lots with bid counts · CPV 4523 · Wales (Cymru)
20% had one bid
Market · select a colour for counts
1 bid20%
Market: 2 of 10 lots with published bid counts.
2–350%
Market: 5 of 10 lots with published bid counts.
4–620%
Market: 2 of 10 lots with published bid counts.
7+10%
Market: 1 of 10 lots with published bid counts.

How did awards compare with estimates?

i

Where winning prices landed against estimates.

Each colour shows awards below, close to or above the published estimate, one lot at a time.

Past prices are a guide, not a bid price.

Last 36 months.

This buyerToo few to chart: 3 lots with estimate and award, 5 needed · all categories
The market7 lots with estimate and award · CPV 4523 · Wales (Cymru)
71% below estimate
Market · select a colour for counts
Below estimate71%
Market: 5 of 7 lots with an estimate and award.
Within ±2%14%
Market: 1 of 7 lots with an estimate and award.
Above estimate14%
Market: 1 of 7 lots with an estimate and award.
2

Assess each lot
i

What past awards tell you about each lot.

See the forecast, this buyer’s earlier suppliers and firms with relevant wins.

No supplier is confirmed as a bidder.

Open a lot for its forecast, this buyer’s previous supplier and possible competitors, from published award history, not a bid list

Lot #1CPV 4525360 monthsPublished estimate£556m

This lot is listed as CPV 4525. The table above uses the notice category.

Expected competition
i

How many bids this lot may attract.

The forecast uses similar past competitions. The bar shows either that forecast or past bid counts; the line below says which.

Each lot shows its own forecast based on its own category; forecasts for different lots of the same notice are not comparative. The bar shows 115 past lots.

A forecast, not a list of bidders.

—No model forecast yet15% chance of a single bid
Past bids on 115 similar lots
1 bid15%
17 of 115 similar past lots received 1 bid (15%).
2–337%
42 of 115 similar past lots received 2–3 (37%).
4–635%
40 of 115 similar past lots received 4–6 (35%).
7+14%
16 of 115 similar past lots received 7+ (14%).
Comparable past lots usually drew 3 bids.
Commercial price forecast
i

Where the award price may land.

The forecast uses similar awards and the buyer’s estimate. The band covers the middle half of likely prices.

No comparable awards for this lot yet.

A statistical guide from past awards, not a price to bid.

—No model forecast yet
No comparable awards on record for this lot’s category yet. The published estimate is £556m, and the forecast stays empty until the market has a record to read.

Who has supplied this buyer on similar work?
i

Who has done similar work for this buyer.

Past contracts are matched by buyer, title and type of work.

A past supplier may not bid again.

No earlier contract of this buyer matches this lot on the published record.

Who could compete for this lot?
i

Who could compete for this lot?

Firms with relevant past wins. On a framework, we show firms on that agreement.

None is confirmed as a bidder.

Candidate suppliers for this notice have not been worked out yet, so this is not a verdict that nobody fits.

About this data
  • Source. Official UK public procurement notices (Find a Tender), reused under the Open Government Licence v3.0. New notices arrive through the day; the figures are rebuilt nightly.
  • Two views, kept apart. The authority’s own track record and the wider market for the same kind of work sit side by side and are never mixed. Where the local picture is too thin, a figure widens to a broader market and says which one it used.
  • Forecasts are labelled. The price forecast and its range, possible competitors and the earlier-work matches are our estimates from past awards: not published facts, not win chances and not price advice. Official notices do not say who is bidding.
  • Every figure shows what it rests on. Not every notice publishes a bid count, a value or a delivery region, so each figure carries the number of records behind it, and one built on few records is marked as such. The on a figure explains it; the counting rules are in the methodology. Spotted something wrong? Tell us.

Procedure terms & legal framework

From the official record
Legal basis
UKPGA · 2023/54 Procurement Act 2023
Procurement category
Works
Notice status
Planned procurement
Procurement threshold
Above threshold (FTS publication)
Regulatory regime
Utilities
Commercial structure
Stand-alone contract (no framework)
Competition type
Competitive procedure
GPA / WTO covered
Unspecified in notice
Recurring procurement
Unspecified in notice
First published
24 Jul 2026, 12:50 BST
Last source update
24 Jul 2026, 12:50 BST
FTS notice number
2026/S 000-070264
Latest notice
Preliminary market engagement notice (UK2)
Classification (CPV)
Banking and investment servicesConstruction management servicesConstruction project management servicesConstruction workConstruction work for water and sewage pipelinesConstruction work for water projectsConstruction-related servicesCorporate finance and venture capital servicesDrinking-water treatment plant construction workEngineering design services for the construction of civil engineering works
+3 moreGeneral construction work for pipelinesWater distribution and related services
Delivery area
Wales (UKL15)
Official registry OCID
ocds-h6vhtk-06d32b Find a Tender

How it was run

Official notice
Submission deadline
—

Timeline

24 Jul 2026 → 30 Nov 2028 · 3 dates
  1. Planning notice published93 days ago
    24 Jul 2026, 12:50 BST
  2. Market engagement75 days ago
    10 Aug 2026, 23:59 BST

    Market Engagement – Investors and Lenders

    DCWW wishes to engage with organisations that are infrastructure investors, lenders or other providers of institutional capital with experience of financing major infrastructure projects.

    Investors, lenders or other providers of institutional capital wishing to provide feedback on the emerging commercial model, financing approach and financeability of the Cwm Taf WSS Procurement Scheme should register their interest by emailing [email protected] no later than 4 August 2026.

    Registered participants will be issued with a questionnaire for completion and return by the response deadline which will be set out in the questionnaire. Following review of questionnaire responses, DCWW will consider responses and may, at its discretion, engage in one-to-one discussions to explore and clarify matters raised in their submissions and obtain further feedback on key commercial, contractual and financing issues.

    Who Should Participate

    -Providers of debt and equity finance

    -Developers and sponsors

    in each case in major new infrastructure projects.

    To promote transparency and ensure equal treatment of all market participants, DCWW intends to share an anonymised summary of key themes and insights arising from this focused Market Engagement with the wider market in advance of the Market Engagement events referred to below. No organisation-specific information will be disclosed.

    Market Engagement – Wider Market

    DCWW intends to hold in-person Market Engagement events open to the wider market – whether investors, lenders, contractors, designers and other delivery organisations - interested in the Cwm Taf WSS Procurement Scheme.

    The events will provide an update on the Cwm Taf WSS Procurement Scheme, the proposed procurement approach, commercial model, contractual framework and financing strategy, and will provide an opportunity for participants to ask questions and provide feedback on the developing procurement and commercial arrangements.

    Details of the event format, indicative agenda, locations and registration arrangements are set below.

    Who Should Participate

    -Infrastructure investors and major infrastructure financing bodies

    -Design, construction and engineering firms

    -Contractors and other delivery organisations

    DCWW welcomes participation from existing joint ventures and consortia and encourages the formation of new partnerships where appropriate.

    Market Engagement Event Dates and Locations

    DCWW intends to hold in-person Market Engagement events at the following locations:

    -Cardiff – 8 September 2026, time TBC

    -London – 9 September 2026, time TBC

    Organisations wishing to attend should register by 10 August 2026. Further details, including venue information and the final agenda, will be provided to registered participants.

    The Market Engagement events are expected to comprise presentations and opportunities for market participants to engage in discussions and provide feedback on the developing procurement, commercial, contractual and financing approach for the Cwm Taf WSS Procurement Scheme.

    For further information, market participants should register via the contact details below.

    Registration Process

    Please email [email protected] to register your interest in either:

    -the focused investor/lender Market Engagement; and/or

    -the in-person Market Engagement events.

    DCWW will provide further details regarding participation, key dates and engagement materials following registration.

    When emailing, please include one of the following subject lines to indicate your preferred engagement activity:

    -Registration – Investor/Lender Market Engagement

    -Registration – In-Person Market Engagement Event

    -Registration – Investor/Lender and In-Person Market Engagement Events (if registering for both)

    Purpose of this Notice and Previous Engagement

    Since the previous market engagement, DCWW has continued to develop the commercial, contractual and financing strategy for the Cwm Taf WSS Procurement Scheme. In particular, further consideration has been given to the proposed CAP Agreement structure, risk allocation framework, payment mechanism, financing approach and procurement strategy. This engagement seeks to obtain market feedback on these.

    Topics for Feedback/Discussion

    Topics that DCWW is seeking market feedback on include:

    -CAP Agreement structure and contractual framework

    -Commercial and risk allocation principles

    -Payment mechanism and incentivisation arrangements

    -Financing structures and financeability considerations

    -Contract duration and residual value approach

    -Procurement process design and bidder participation

    -Opportunities to improve value for money for customers

    Future Market Engagement

    This notice covers both the planned investor/lender Market Engagement and the in-person Market Engagement events. DCWW may undertake additional market engagement activities and will update the market as appropriate.

    General

    Participation in any market engagement activity is not a condition of participation in any future procurement process. DCWW may use information obtained through these engagement activities to refine its procurement strategy, commercial model, contractual arrangements and procurement documentation. Details of the preliminary market engagement activities, documents shared, key themes arising from feedback and any relevant questions and answers will be made available to the market as appropriate and reflected in the procurement documentation issued at the launch of the competitive process.

    DCWW reserves the right to alter or terminate the market engagement process at any time without notice.

    DCWW is not liable for any costs or expenses incurred by any party in responding to this market engagement.

    Submission of a response does not guarantee inclusion in any future procurement process.

    DCWW reserves the right to enter into further rounds of pre-market engagement.

    All future procurement opportunities will be published through the Central Digital platform (CDP).

    DCWW will process your personal data, such as your name and contact details, in accordance with its obligations under the UK General Data Protection Regulation and Data Protection Act 2018. Your personal data will be used for the purposes contacting you for further information and to invite participation in future market engagement activities connected with the Cwm Taf WSS Procurement Scheme only. Any information you provide may be shared with our Cwm Taf WSS Procurement Scheme commercial and or legal advisors.

    Further information on the Cwm Taf WSS Procurement Scheme and this market engagement can be found in the supporting press release available at: corporate.dwrcymru.com/en/news-media/2026/w… ↗

  3. Today
    25 Oct 2026
  4. Contract starts
    30 Nov 2028

Notice history

1 event · 1 release on Find a Tender
  1. Preliminary market engagement notice published
    24 Jul 2026, 12:50 BST
    UK2

Commercial outcome & contract awards

Pipeline notice
Awards (0)
No award published
Contracts (0)
No contract published
Bid statistics
No aggregate bid statistics published

Contracting authority & participating public bodies

Dwr Cymru Cyfyngedig

Contracting authorityPrivate utility GB-COH: 02366777 Linea, Fortran Road,, Cardiff, Wales, CF3 0LTContact name, email

Official documents & specifications (1)

Official links; attachments are not copied

Notices published for this procedure