--- title: "Mains Rehabilitation" ocid: "ocds-h6vhtk-04c0ac" canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-04c0ac" markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-04c0ac.md" json_url: "https://d3tenders.com/contract/ocds-h6vhtk-04c0ac.json" source: "Find A Tender Service" current_stage: "Tender" buyer: "THAMES WATER UTILITIES LIMITED" published: "2025-01-20" --- # Mains Rehabilitation Buyer: THAMES WATER UTILITIES LIMITED Current stage: Tender OCID: ocds-h6vhtk-04c0ac [View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-h6vhtk-04c0ac) [Download OCDS JSON](https://d3tenders.com/contract/ocds-h6vhtk-04c0ac.json) ## Summary Thames Water Utilities Limited is inviting tenders for a large-scale Mains Rehabilitation project focused on the construction industry. Situated in the Thames Water region, including areas in UKI and UKJ, the project encompasses a variety of construction works such as the installation of a new chemical storage and dosing system, aeration lanes, and tertiary solids removal facilities. The most recent updates to the project include the cancellation of Lot 2 due to insufficient candidates and the optimization of distribution water mains. The procurement method is a selective, negotiated procedure with a prior call for competition, and the tender submission deadline is 14 January 2025. This tender provides significant business growth opportunities for construction companies specializing in water treatment and infrastructure projects. Companies with expertise in designing and building water distribution systems, including structural replacements and installation of water-related apparatus, would be well-suited to compete. With an estimated total value of £440 million and a potential contract duration of up to eight years, suppliers could secure a long-term partnership with Thames Water, thereby stabilizing revenue streams and fostering growth. ## Notice This project includes, but is not limited to the following packages of work: A new chemical storage and dosing system to aid Phosphorus removal A new pre-aeration primary tank supernatant and RAS mixing and distribution chamber A new activated sludge aeration lane that matches existing with two new 35 m diameter final settlement tanks and RAS system A new Tertiary Solids Removal treatment stage A new standby power facility A new centrate storage tank and pump system to return centrate for treatment A new Picket Fence Thickener to operate in parallel to two existing units A new liquor return pump station to return site liquors for treatment ### Lot Information Lot 1 (Design and Build) Lot 1 - Design and Build Water Quality, Burst Driven, DMA Replacement IChemE Burgundy Book - TW Amendments Optimisation, structural replacement or relining of distribution water mains within DMAs and bounded by district meters and the District Boundary Valves. Structural replacement of all service connections from the distribution mains to customer boundaries, including installation of a suitable boundary box. Replacement of all apparatus connected to the network including valves, hydrants, disinfection points, air valves, etc. Securing abandoned mains by cutting and capping. Removing surface covers, marker posts and plates of abandoned washouts, hydrants and valves etc. so that only covers relating to live apparatus remain. Renewal: Thames Water envisages that the contract will be awarded for an initial term of 4 years with options to extend up to a maximum duration of 8 years. Lot 2 (Build Only) Lot 2 - Build Only Water Quality, Burst Driven, DMA Replacement NEC4 ECSS Short form with TW Amendments Optimisation, structural replacement or relining of distribution water mains within DMAs and bounded by district meters and the District Boundary Valves. Structural replacement of all service connections from the distribution mains to customer boundaries, including installation of a suitable boundary box. Replacement of all apparatus connected to the network including valves, hydrants, disinfection points, air valves, etc. Securing abandoned mains by cutting and capping. Removing surface covers, marker posts and plates of abandoned washouts, hydrants and valves etc. so that only covers relating to live apparatus remain. Renewal: Thames Water envisages that the contract will be awarded for an initial term of 4 years with options to extend up to a maximum duration of 8 years. ## Key Details | Field | Value | | --- | --- | | Publication source | Find A Tender Service | | Latest notice | https://www.find-tender.service.gov.uk/Notice/001856-2025 | | Notice type | Tender Notice | | Procurement type | Framework | | Procurement category | Works | | Procurement method | Selective | | Procurement method details | Negotiated procedure with prior call for competition | | Tender suitability | Not specified | | Awardee scale | Not specified | | All stages | Tender | ## Dates | Field | Value | | --- | --- | | Publication date | 20 Jan 2025 | | Submission deadline | 14 Jan 2025 | | Future notice date | Not specified | | Award date | Not specified | | Contract period | Not specified | | Recurrence | Not specified | ## Values | Field | Value | | --- | --- | | Tender value | £440,000,000 | | Lots value | £440,000,000 | | 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 - 45 - Construction work ### Codes - 45000000 - Construction work - 45210000 - Building construction work ## Release History - 20 Jan 2025 at 12:40 - TenderUpdate - Tender Notice - https://www.find-tender.service.gov.uk/Notice/001856-2025 - 28 Nov 2024 at 15:08 - TenderUpdate - Tender Notice - https://www.find-tender.service.gov.uk/Notice/038481-2024 - 28 Nov 2024 at 10:19 - Tender - Tender Notice - https://www.find-tender.service.gov.uk/Notice/038402-2024 ## Notice URLs - https://forms.office.com/e/Nf6ihHFYT7 - https://thameswater.sharepoint.com/sites/ProcurementSupportCentreBidProcessRepository/FA2172MainsRehabilitation - https://www.thameswater.co.uk/ ## 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-04c0ac. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-04c0ac.json.