---
title: "Market Engagement Notice - Biogas Assets, Digester Maintenance and Tanks"
ocid: "ocds-h6vhtk-06b976"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-06b976"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-06b976.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-06b976.json"
source: "Find A Tender Service"
current_stage: "Planning"
buyer: "SOUTHERN WATER SERVICES LIMITED"
published: "2026-06-19"
---

# Market Engagement Notice - Biogas Assets, Digester Maintenance and Tanks

Buyer: SOUTHERN WATER SERVICES LIMITED  
Current stage: Planning  
OCID: ocds-h6vhtk-06b976

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## Summary

Southern Water Services Limited, based in Worthing, United Kingdom, is initiating a procurement process for the maintenance and enhancement of its biogas assets, digester maintenance, and tank systems through a preliminary market engagement notice. This planning stage seeks initial responses from interested parties regarding design, specification, manufacturing, supply, installation, commissioning, and maintenance for sludge-processing and biogas asset infrastructure. The main procurement category is goods, and this project involves various services at Southern Water's Sludge Treatment Centres, encompassing regions within the UKJ area. Potential suppliers should submit their responses by 14 August 2026, and the future notice date is set for 17 August 2026. The contract period is slated to begin on 30 April 2027 and conclude on 29 April 2031, with possible extensions until 2035.

This procurement offers significant opportunities for companies specializing in sludge-processing equipment, storage tank systems, and maintenance services. Due to the scale of operations and the emphasis on continuous operational performance and safety, businesses involved in asset refurbishment, process optimisation, and biogas energy solutions are well-positioned to benefit. The procurement process supports small and medium-sized enterprises (SMEs) by allowing their participation, thereby creating avenues for business growth in the utilities sector. Companies looking to expand their service offerings within the private utility market can leverage this tender to establish long-term partnerships with a prominent utility service provider in the region.

## Notice

General Requirements - * Design and specification * Manufacture and/or supply * Installation and commissioning * Planned preventative maintenance (PPM) * Reactive maintenance and repair * Refurbishment and replacement * Process optimisation and performance improvement For the following areas - A. Digester Systems - Southern Water operates 43 digesters across 16 Sludge Treatment Centres (STCs), with a full cleaning and maintenance cycle typically undertaken on a circa 9-year basis. Between major interventions, assets undergo routine inspection and maintenance to ensure continued safe and efficient operation. B. Biogas Assets - Southern Water operates a range of biogas assets supporting anaerobic digestion and energy recovery processes. These assets are critical to operational performance and safety compliance C. Tank Systems (Non-Concrete) - Southern Water operates a range of non-concrete tank systems across its water and wastewater operations - circa 200+. These assets are used for a variety of applications including the storage of drinking water, wastewater and sewage treatment, process water, industrial effluent, anaerobic digestion/biogas processes, and bulk solids.

### Planning Information

Please not this is not a call for competition
Note: If you are already registered on Southern Water's sourcing portal please go straight to Step 2 below
If you are unregistered please follow the instructions below to register
1. Register your company on the Jaggaer sourcing portal (this is required only once)
To register or log in please go to - https://southernwater.bravosolution.co.uk/web/login.html
Select the "Login or register to participate" link above and click the "Register Now" link on the home page
Accept the terms and conditions and click "Next"
Enter your correct business and user details
Note the username you chose and click "Save" when complete
You will shortly receive an email with your unique password (please keep this secure)
2. Respond to the PQQ/ITT
Login to the portal with your username/password
Click the PQQs open to all suppliers or ITTs open to all suppliers' link.
Click on the relevant PQQ/ITT

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/058218-2026 |
| Notice type | UK2 - Preliminary Market Engagement Notice |
| Procurement type | Framework |
| Procurement category | Goods |
| Procurement method | Not Specified |
| Procurement method details | Not specified |
| Tender suitability | SME |
| Awardee scale | Not specified |
| All stages | Planning |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 19 Jun 2026 |
| Submission deadline | Not specified |
| Future notice date | 17 Aug 2026 |
| Award date | Not specified |
| Contract period | 29 Apr 2027 - 29 Apr 2031 |
| 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 | Planning |
| Lots status | Planning |
| 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

- 42 - Industrial machinery
- 44 - Construction structures and materials; auxiliary products to construction (except electric apparatus)
- 45 - Construction work

### Codes

- 42996900 - Sludge-processing equipment
- 44611420 - Sludge-storage tanks
- 44611500 - Water tanks
- 45232422 - Sludge-treatment works

## Release History

- 19 Jun 2026 at 14:42 - Planning - UK2 - Preliminary Market Engagement Notice - https://www.find-tender.service.gov.uk/Notice/058218-2026

## Documents

- https://www.find-tender.service.gov.uk/Notice/058218-2026
  19th June 2026 - Preliminary market engagement notice on Find a Tender

## Notice URLs

- http://www.southernwater.co.uk
- https://southernwater.bravosolution.co.uk/web/login.html
- 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-06b976. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-06b976.json.