--- title: "Sludge Holding Tanks & Roofs" ocid: "ocds-h6vhtk-05e2b6" canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-05e2b6" markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-05e2b6.md" json_url: "https://d3tenders.com/contract/ocds-h6vhtk-05e2b6.json" source: "Find A Tender Service" current_stage: "Tender" buyer: "THAMES WATER UTILITIES LIMITED" published: "2025-12-10" --- # Sludge Holding Tanks & Roofs Buyer: THAMES WATER UTILITIES LIMITED Current stage: Tender OCID: ocds-h6vhtk-05e2b6 [View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-h6vhtk-05e2b6) [Download OCDS JSON](https://d3tenders.com/contract/ocds-h6vhtk-05e2b6.json) ## Summary Thames Water Utilities Limited has initiated a procurement process for the supply and commissioning of sludge holding tanks and roofs at various wastewater treatment sites. The tender, titled "Sludge Holding Tanks & Roofs", falls under the industry category of sewage and industrial waste treatment facilities and services. The process is currently in the tender update stage, with key deadlines including the enquiry period ending on 30th December 2025, and the deadline for expression of interest now extended to 9th January 2026. The project's delivery is across regions UKI and UKJ in the United Kingdom. The procurement follows a Competitive Flexible Procedure under the Procurement Act 2023, which includes multiple stages like a Pre-Specific Questionnaire (PSQ) and subsequent negotiations and evaluations. This procurement presents significant opportunities for businesses specialising in sewage infrastructure and environmental compliance solutions. Companies that can offer efficient supply and installation capabilities, along with innovative solutions that align with regulatory standards, are well-suited to compete. SMEs with expertise in producing sludge-storage tanks, water tanks, and associated structures would benefit from engaging with this opportunity, particularly as the procurement favours those who can maximise commercial efficiencies and future-proof program capacities. Prospective suppliers should be prepared to participate in mini-competitions as part of a framework agreement, allowing for ongoing opportunities once the initial requirements are defined. ## Notice This procurement is for the supply and commissioning of sludge tanks, digesters, other associated tanks, roofs, and related items at various wastewater treatment sites. Target Sites The procurement will cover purchase, installation and commissioning of new sludge tanks, digesters, and other associated tanks and roofs and associated items. Objectives * Compliance: Ensure compliance with legislation, improve the environmental impact of the STW and provide infrastructure which is fit for purpose. * Commercial Value: Optimise the material and delivery solution to maximise commercial efficiencies for Thames Water * Futureproofing: Implement a framework which enables Thames Water to be able toe secure the capacity it requires for future programmes of works Procurement Approach: A competitive tender process will be undertaken to appoint a supplier(s) capable of delivering the required scope. The strategy favours a supplier who can streamline delivery, ensure consistency, and maximise commercial and operational benefits. Procurement Timeline Considerations: The procurement timeline is currently under review due to strategic and regulatory reassessments at certain sites. Specifically: * A study evaluating the requirements to meet the Environment Agency IED requirements is ongoing, with outcomes expected later in the year. These findings will inform final scope and procurement readiness Expected Outcomes * Improved asset reliability and operational performance * Enhanced alignment with environmental and regulatory objectives * Commercial efficiencies through strategic sourcing and standardisation Please note that that deadline for asking for access to the PSQ & submitting of the PSQ is 22 December 2025, 10 am. ### Lot Information Sludge Holding Tanks (including Digesters and other associated Tanks) (Supply and Installation) This procurement relates to the supply and commissioning support of Sludge tanks, Digesters and Roofs and associated items across potential multiple wastewater treatment sites. Sludge Holding Tanks (including Digesters and other associated Tanks) (CDM Responsibilities) This procurement relates to the supply and commissioning support of Sludge tanks, Digesters and Roofs and associated items across potential multiple wastewater treatment sites. Whilst acting as the responsible CDM representative at the location. Sludge Holding Tank Roofs (including Digesters) This procurement relates to the supply and commissioning support of roofs for the fitting to Sludge tanks, Digesters and associated items across potential multiple wastewater treatment sites ## Key Details | Field | Value | | --- | --- | | Publication source | Find A Tender Service | | Latest notice | https://www.find-tender.service.gov.uk/Notice/081350-2025 | | Notice type | UK4 - Tender Notice | | Procurement type | Framework | | Procurement category | Goods | | Procurement method | Selective | | Procurement method details | Competitive flexible procedure | | Tender suitability | SME | | Awardee scale | Not specified | | All stages | Tender | ## Dates | Field | Value | | --- | --- | | Publication date | 10 Dec 2025 | | Submission deadline | 30 Dec 2025 | | Future notice date | Not specified | | Award date | Not specified | | Contract period | 31 May 2026 - 31 May 2034 | | Recurrence | Not specified | ## Values | Field | Value | | --- | --- | | Tender value | Not specified | | Lots value | Not specified | | Awards value | Not specified | | Contracts value | Not specified | ## Status | Field | Value | | --- | --- | | Tender status | Active | | Lots status | Active | | Awards status | Not specified | | Contracts status | Not specified | ## Buyer | Field | Value | | --- | --- | | Main buyer | THAMES WATER UTILITIES LIMITED | | Locality | READING | | Post town | Reading | | Postcode | RG1 8DB | | Country | England | | ITL 1 | TLJ South East (England) | | ITL 2 | TLJ1 Berkshire, Buckinghamshire and Oxfordshire | | ITL 3 | TLJ16 Berkshire West | | Local authority | Reading | | Electoral ward | Thames | | Westminster constituency | Reading Central | | Delivery location | TLI London, TLJ South East (England) | ## CPV Codes ### Divisions - 44 - Construction structures and materials; auxiliary products to construction (except electric apparatus) - 45 - Construction work - 90 - Sewage, refuse, cleaning and environmental services ### Codes - 44611420 - Sludge-storage tanks - 44611500 - Water tanks - 45232421 - Sewage treatment works - 45232422 - Sludge-treatment works - 45252000 - Construction works for sewage treatment plants, purification plants and refuse incineration plants - 90420000 - Sewage treatment services ## Release History - 10 Dec 2025 at 10:28 - TenderUpdate - UK4 - Tender Notice - https://www.find-tender.service.gov.uk/Notice/081350-2025 - 17 Nov 2025 at 16:01 - Tender - UK4 - Tender Notice - https://www.find-tender.service.gov.uk/Notice/074498-2025 ## Documents - https://www.find-tender.service.gov.uk/Notice/081350-2025 10th December 2025 - Tender notice on Find a Tender - https://www.find-tender.service.gov.uk/Notice/074498-2025 17th November 2025 - Tender notice on Find a Tender ## Notice URLs - https://forms.office.com/e/8Dt3jAAmhs - https://www.legislation.gov.uk/ukpga/2023/54/contents ## Provenance This Markdown file is an alternate public rendering of the D3 Tenders contract record. The canonical page is https://d3tenders.com/contract/?ocid=ocds-h6vhtk-05e2b6. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-05e2b6.json.