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Sewer Sealing Request for Information

Southern Water Services Limited

This public procurement record has 2 releases in its history.

Tender

28 May 2026 at 13:58

UK4 - Tender Notice
Planning

15 Oct 2025 at 14:11

UK2 - Preliminary Market Engagement Notice
Summary of the contracting process

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.

How relevant is this notice?

Notice Information

Notice Title

Sewer Sealing Request for Information

Notice Description

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.

Notice Details

Publication & Lifecycle

Open Contracting ID
ocds-h6vhtk-05cd5a
Publication Source
Find A Tender Service
Latest Notice
https://www.find-tender.service.gov.uk/Notice/050337-2026
Current Stage
Tender
All Stages
Planning, Tender

Procurement Classification

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

Common Procurement Vocabulary (CPV)

CPV 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

CPV 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

Notice Value(s)

Tender Value
£280,000,000 £100M-£1B
Lots Value
£280,000,000 £100M-£1B
Awards Value
Not specified
Contracts Value
Not specified

Notice Dates

Publication Date
28 May 20263 months ago
Submission Deadline
2 Jul 2026Expired
Future Notice Date
2 Mar 2026Expired
Award Date
Not specified
Contract Period
1 Dec 2026 - 29 Nov 2030 3-4 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
Southern 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
WORTHING
Postcode
BN13 3NX
Postcode Area
Brighton
Country
England
Major Region (ITL 1)
TLJ South East (England)
Basic Region (ITL 2)
TLJ2 Surrey, East and West Sussex
Small Region (ITL 3)
TLJ27 West Sussex (South West)
Delivery Location
TLJ South East (England)
Local Authority
Worthing
Electoral Ward
Northbrook
Westminster Constituency
Worthing West

Further Information

Notice Documents

Open Contracting Data Standard (OCDS)

View full OCDS Record for this contracting process

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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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