--- title: "Sewer Sealing Request for Information" ocid: "ocds-h6vhtk-05cd5a" canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-05cd5a" markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-05cd5a.md" json_url: "https://d3tenders.com/contract/ocds-h6vhtk-05cd5a.json" source: "Find A Tender Service" current_stage: "Tender" buyer: "SOUTHERN WATER SERVICES LIMITED" published: "2026-05-28" --- # Sewer Sealing Request for Information Buyer: SOUTHERN WATER SERVICES LIMITED Current stage: Tender OCID: ocds-h6vhtk-05cd5a [View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-h6vhtk-05cd5a) [Download OCDS JSON](https://d3tenders.com/contract/ocds-h6vhtk-05cd5a.json) ## Summary Southern Water Services Limited is actively seeking suppliers for a competitive tender titled "Sewer Sealing Request for Information," aiming to enhance sewer resilience by sealing them to limit water infiltration. This open tender, part of a competitive flexible procedure, is currently at the tender stage with key documents accessible until 2nd July 2026. The procurement, set in the South East region of the United Kingdom, is valued at approximately £280 million and is divided into two Lots focused on sewer lining and innovative groundwater infiltration solutions. Interested participants must comply with submission guidelines and ensure registration on the digital platform prior to bidding. The comprehensive procurement process involves multiple stages, including pre-qualification, invitation to tender, possible negotiations, and a best and final offer assessment. This tender presents substantial business growth opportunities, particularly for firms specialising in sewerage works equipment, construction, management, and innovative ground water control techniques. The scale and scope of the contract favour companies with proven expertise in sewer sealing methods and robust project delivery capabilities. With provisions for SMEs and VCSEs, and potential contract renewals, both established contractors and innovative startups can benefit. The process encourages participation from diverse suppliers, offering a chance to collaborate on large-scale infrastructure improvements, thus contributing to environmental sustainability and enhancing operational capacities in public utilities. ## Notice Southern Water is committed to reducing storm overflows and managing the volume of water entering the sewer network. A key part of this strategy involves sealing sewers to limit water infiltration and inflow, helping to protect the environment and improve network resilience. We are inviting suppliers with the capability to provide sewer sealing repairs to submit a response to this Conditions of Participation (COP). The COP is divided into two Lots: Lot 1: Full Length Lining & Ground Water Infiltration Sealing Lot 2: Novel Ground Water Infiltration Sealing ### Lot Information Full Length Lining & Ground Water Infiltration Sealing The Contractor shall attend and provide rehabilitation in the form of sewer lining in accordance with the Work Order. The Contractor will line the sewer to remove all identified defects in line with SWS standards. Material specification and operating procedures that the Contractor is required to adhere to for jobs of this type can be found within Southern Water's Sewer Lining Standard. Renewal: Option to extend by up to 4 x 1 year periods. Novel Ground Water Infiltration Sealing This Lot seeks suppliers offering innovative, next generation technologies and approaches aimed at identifying, preventing, mitigating, or repairing groundwater infiltration into sewer networks and inspection chambers across South East (SE) regions providing services as outlined in Lot 1 description. Renewal: Option to extend by up to 4 x 1 year periods. ### Planning Information Southern Water is initiating a market engagement exercise to help shape our future procurement strategy for Sewer Sealing services. This will begin with the release of a Request for Information (RFI). We encourage all interested suppliers to participate. Please note that Southern Water reserves the right to engage in further discussions with any organisation, regardless of whether they respond to the initial RFI. Depending on the insights gathered, we may follow up with: One-to-one meetings (either in person or online), A live Marketplace event or townhall session (either in person or online), and/or a second RFI, if deemed necessary. The initial RFI is scheduled to be issued on 17th October 2025. ## Key Details | Field | Value | | --- | --- | | Publication source | Find A Tender Service | | Latest notice | https://www.find-tender.service.gov.uk/Notice/050337-2026 | | Notice type | UK4 - Tender Notice | | Procurement type | Framework | | Procurement category | Works | | Procurement method | Open | | Procurement method details | Competitive flexible procedure | | Tender suitability | SME, VCSE | | Awardee scale | Not specified | | All stages | Planning, Tender | ## Dates | Field | Value | | --- | --- | | Publication date | 28 May 2026 | | Submission deadline | 2 Jul 2026 | | Future notice date | 2 Mar 2026 | | Award date | Not specified | | Contract period | 1 Dec 2026 - 29 Nov 2030 | | Recurrence | Not specified | ## Values | Field | Value | | --- | --- | | Tender value | £280,000,000 | | Lots value | £280,000,000 | | 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 | SOUTHERN WATER SERVICES LIMITED | | Locality | WORTHING | | Post town | Brighton | | Postcode | BN13 3NX | | Country | England | | ITL 1 | TLJ South East (England) | | ITL 2 | TLJ2 Surrey, East and West Sussex | | ITL 3 | TLJ27 West Sussex (South West) | | Local authority | Worthing | | Electoral ward | Northbrook | | Westminster constituency | Worthing West | | Delivery location | TLJ South East (England) | ## CPV Codes ### Divisions - 39 - Furniture (incl. office furniture), furnishings, domestic appliances (excl. lighting) and cleaning products - 44 - Construction structures and materials; auxiliary products to construction (except electric apparatus) - 45 - Construction work - 90 - Sewage, refuse, cleaning and environmental services ### Codes - 39350000 - Sewerage works equipment - 44130000 - Sewer mains - 44163130 - Sewer pipes - 45232400 - Sewer construction work - 45232410 - Sewerage work - 90470000 - Sewer cleaning services - 90480000 - Sewerage management services - 90491000 - Sewer survey services ## Release History - 28 May 2026 at 12:58 - Tender - UK4 - Tender Notice - https://www.find-tender.service.gov.uk/Notice/050337-2026 - 15 Oct 2025 at 13:11 - Planning - UK2 - Preliminary Market Engagement Notice - https://www.find-tender.service.gov.uk/Notice/065612-2025 ## Documents - https://www.find-tender.service.gov.uk/Notice/050337-2026 28th May 2026 - Tender notice on Find a Tender - https://www.find-tender.service.gov.uk/Notice/065612-2025 15th October 2025 - Preliminary market engagement notice on Find a Tender ## Notice URLs - http://www.southernwater.co.uk - https://southernwater.bravosolution.co.uk - https://southernwater.bravosolution.co.uk/ - 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-05cd5a. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-05cd5a.json.