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CM3543 ASP Diffuser Asset Replacement

YORKSHIRE WATER SERVICES LIMITED

This public procurement record has 3 releases in its history.

TenderUpdate

21 Jul 2026 at 09:47

UK4 - Tender Notice
Tender

17 Jul 2026 at 11:04

UK4 - Tender Notice
Planning

11 Jun 2026 at 12:32

UK2 - Preliminary Market Engagement Notice
Summary of the contracting process

Yorkshire Water Services Limited is procuring diffuser system services for its wastewater treatment asset portfolio across the United Kingdom. The requirement covers Activated Sludge Plants and associated wastewater treatment processes, including assessment of existing diffuser assets, engineering design, supply of diffusers and mechanical components, installation, commissioning, performance validation and phased handover. It is an end-to-end replacement and new-system delivery service intended to maintain operational continuity. The procurement is primarily for goods, with associated engineering, installation and wastewater treatment services. Relevant work includes sewage-treatment plant equipment, mechanical installation and engineering design. The opportunity is for suppliers able to deliver integrated diffuser-system schemes rather than supply equipment alone, including the practical delivery and commissioning of works at wastewater treatment assets.

The procurement has reached tender: Yorkshire Water has invited offers through a multi-stage competitive flexible procedure under the utilities regime. Suppliers first complete conditions-of-participation checks, followed by contractual compliance and then quality and commercial tendering. Expressions of interest were due by 12 August 2026 at 23:59 BST. Tenders must be submitted electronically through SAP Ariba following invitation. The proposed closed, multi-supplier framework is expected to run from 1 January 2027 to 31 December 2030, with possible extension to 31 December 2034, subject to performance, regulatory requirements and business need. Its estimated value is £9,273,550 gross. Framework call-offs may be made directly or through further competition. Commercial and quality responses each carry 50% of the evaluation weighting, with award decisions due by 20 November 2026.

This opportunity suits specialist wastewater-treatment contractors, diffuser-system manufacturers and engineering-led suppliers able to combine asset assessment, design, equipment supply, mechanical installation and commissioning. Strong candidates will need demonstrable experience delivering diffuser or comparable aeration-system projects within Activated Sludge Plants and other operational wastewater environments. The requirement favours organisations with the technical capability to validate performance, manage phased handover and maintain continuity while existing treatment assets are replaced or upgraded. Suppliers should also be able to prepare robust quality and commercial submissions, meet Yorkshire Water’s conditions of participation and accept the final framework contract terms. Capacity to support multiple call-off contracts over a multi-year programme is important, including work awarded directly or through further competition among appointed framework suppliers.

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Notice Information

Notice Title

CM3543 ASP Diffuser Asset Replacement

Notice Description

Yorkshire Water is launching a tender notice of a procurement process for the provision of diffuser system services across its wastewater treatment asset portfolio. The proposed framework will support the assessment, design, supply, installation, commissioning and replacement of diffuser systems within Activated Sludge Plants (ASPs) and associated wastewater treatment processes. The framework is intended to provide end-to-end scheme delivery, including condition assessment of existing assets, design of replacement or new diffuser systems, supply of diffusers and associated mechanical components, installation works, commissioning, performance validation and phased handover to maintain operational continuity. Suppliers with relevant experience and capability are invited to express interest and participate in the CoP.

Lot Information

Lot 1

Renewal: The contract may be extended subject to performance, regulatory requirements, and business need.

Planning Information

Suppliers are invited to express interest via email to Luis.Barreiros@Yorkshirewater.co.uk with brief details of their service offering. If you wish to express interest but are not yet registered as a Yorkshire Water supplier, please email: Luis.Barreiros@Yorkshirewater.co.uk and include the full legal company name, and the email address you wish to register. If you are already registered as a Yorkshire Water supplier, please email Luis.Barreiros@Yorkshirewater.co.uk and include your ANID number, your full company name, and your registered Ariba email address. There are no specific conditions for participation in this market engagement. Participation is voluntary and non-binding.

Notice Details

Publication & Lifecycle

Open Contracting ID
ocds-h6vhtk-06b2d2
Publication Source
Find A Tender Service
Latest Notice
https://www.find-tender.service.gov.uk/Notice/068534-2026
Current Stage
Tender
All Stages
Planning, Tender

Procurement Classification

Notice Type
UK4 - Tender Notice
Procurement Type
Framework
Procurement Category
Goods
Procurement Method
Selective
Procurement Method Details
Competitive flexible procedure
Tender Suitability
Not specified
Awardee Scale
Not specified

Common Procurement Vocabulary (CPV)

CPV Divisions

42 - Industrial machinery

45 - Construction work

51 - Installation services (except software)

71 - Architectural, construction, engineering and inspection services

90 - Sewage, refuse, cleaning and environmental services

CPV Codes

42996000 - Machinery for the treatment of sewage

45232421 - Sewage treatment works

45232422 - Sludge-treatment works

45252130 - Sewage plant equipment

51100000 - Installation services of electrical and mechanical equipment

71320000 - Engineering design services

90420000 - Sewage treatment services

Notice Value(s)

Tender Value
£9,273,550 £1M-£10M
Lots Value
£9,273,550 £1M-£10M
Awards Value
Not specified
Contracts Value
Not specified

Notice Dates

Publication Date
21 Jul 20262 months ago
Submission Deadline
Not specified
Future Notice Date
Not specified
Award Date
Not specified
Contract Period
1 Jan 2027 - 31 Dec 2030 4-5 years
Recurrence
Not specified

Notice Status

Tender Status
Active
Lots Status
Active
Awards Status
Not Specified
Contracts Status
Not Specified

Buyer & Supplier

Contracting Authority (Buyer)

Main Buyer
YORKSHIRE WATER SERVICES LIMITED
Contact Name
Available with D3 Tenders Premium →
Contact Email
Available with D3 Tenders Premium →
Contact Phone
Available with D3 Tenders Premium →

Buyer Location

Locality
BRADFORD
Postcode
BD6 2SZ
Postcode Area
Bradford
Country
England
Major Region (ITL 1)
TLE Yorkshire and The Humber
Basic Region (ITL 2)
TLE4 West Yorkshire
Small Region (ITL 3)
TLE41 Bradford
Delivery Location
Not specified
Local Authority
Bradford
Electoral Ward
Royds
Westminster Constituency
Bradford South

Further Information

Notice Documents

Open Contracting Data Standard (OCDS)

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The Open Contracting Data Standard (OCDS) is a framework designed to increase transparency and access to public procurement data in the public sector. It is widely used by governments and organisations worldwide to report on procurement processes and contracts.

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