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Sewer Sealing Request for Information

Southern Water Services Limited · Private utility

In brief

Southern Water Services Limited was looking for suppliers for construction work. Bidding has closed and no award has been published yet.

It is a framework worth up to £280,000,000 excluding VAT: the most the buyer expects to spend across all suppliers, not one contract.

The contract runs for 4 years, up to 8 years with extensions, starting 1 December 2026.

It is split into 2 lots, so a supplier can bid for part of the work.

The buyer says it is suitable for small and medium-sized businesses.

Built from the notice's own fields. Always check the official notice before you bid.

What the notice says

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

Lots

LotTradeValue
Full Length Lining & Ground Water Infiltration Sealing
1 December 2026 to 29 November 2030
What this lot covers

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.

Construction£240,000,000
Novel Ground Water Infiltration Sealing
1 December 2026 to 29 November 2030
What this lot covers

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.

Construction£40,000,000

Timeline

  1. Preliminary market engagement notice · UK2, notice 065612-2025
  2. Tender notice · UK4, notice 050337-2026

About the buyer

Southern Water Services LimitedLast 12 months

Procurements

52

Awards

16
All tenders and awards from Southern Water Services Limited

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From notice 065612-2025 on Find a Tender, first published 15 October 2025, last updated 28 May 2026. We last checked for changes on 28 September 2026.