BidSonarBidSonar
ContractsGrantsOrganisationsSectors
BidSonarBidSonar·Built by Hypership
SourcesBrandPrivacyTermsCookies

BidSonar is an independent index of public-sector opportunities. We aggregate data from official sources and are not affiliated with any procurement body. Data is licensed under the Open Government Licence v3.0 and the EU TED reuse notice.

    ContractsBiogas Systems and Tank Maintenance Services
    Closed contract

    Biogas Systems and Tank Maintenance Services

    Southern Water seeks experienced suppliers to design, install, and maintain biogas digesters, biogas assets, and non-concrete tank systems across their water and wastewater operations.

    🇬🇧United Kingdom· EnglandPublished 19 Jun 2026· 3 months agoviaFind a Tender

    Decision brief

    4 fields
    • Contract value
      Not disclosed
      Source did not declare a figure
    • Closing date
      Not published
      No closing date published
    • Sector
      Manufacturing
      Browse related listings
    • Location
      🇬🇧United Kingdom
      England

    Lifecycle

    Closed

    No longer open. Published 3 months ago.

    19 June 2026
    Closed — no tender deadline was published

    Brief

    Southern Water is seeking suppliers to provide comprehensive services for the design, manufacture, installation, and maintenance of biogas and digester assets, plus non-concrete tank systems across their water and wastewater operations. Services required include: design and specification, manufacture and/or supply, installation and commissioning, planned preventative maintenance (PPM), reactive maintenance and repair, refurbishment and replacement, and process optimisation and performance improvement. The opportunity covers three key areas: (A) Digester Systems - maintenance of 43 digesters across 16 Sludge Treatment Centres with major cleaning and maintenance cycles undertaken approximately every 9 years, plus routine inspection and maintenance between interventions; (B) Biogas Assets - support for anaerobic digestion and energy recovery processes critical to operational performance and safety compliance; and (C) Tank Systems - management of 200+ non-concrete tanks used for drinking water storage, wastewater and sewage treatment, process water, industrial effluent, and biogas processes. Suppliers should be prepared to deliver these services across multiple locations and demonstrate capability in asset lifecycle management.

    Track record

    1 award · 1 winner
    Thin record

    Only 1 prior award here — too little to read.

    In manufacturing, Southern Water Services Limited has awarded 1 contract to 1 supplier.

    Who wins here
    1. Siltbuster Limited1× · 100%

    Across manufacturing, the most active winners are Alpine Vending Co Ltd, Scanbur, Lord Combustion Services Limited — the field to beat, or your route in as a partner.

    More from Southern Water Services Limited

    4 listingsView all →
    OpenIT & Software🇬🇧United Kingdom

    Continuous Water Quality Monitoring Service

    Provide continuous water quality monitoring services and template development compliant with the Environment Act 2021.

    est.£130,500,000Southern Water Services Limited
    Published 12 Oct 2026
    OpenManufacturing🇬🇧United Kingdom

    Hampshire Water Transfer and Recycling Project - Design, Build, Finance, Maintain and Operate Contract

    Southern Water is tendering a major DBFOM contract to design, build, finance, maintain and operate a new water recycling and transfer system supplying 42 km of infrastructure to address Hampshire's water supply shortfall.

    Southern Water Services Limited
    Published 6 Oct 2026
    OpenProfessional Services🇬🇧United Kingdom

    Southern Water Customer Service Solutions RFI

    Southern Water is requesting information on customer service technology and support solutions to improve service delivery and customer engagement.

    Southern Water Services Limited
    Published 6 Oct 2026
    AwardedEngineering🇬🇧United Kingdom

    Hydraulic Modeling Verification Services

    Procurement for expert hydraulic modeling verification and validation services to ensure accuracy and performance of hydraulic system models.

    £1,194,000Southern Water Services Limited
    Published 6 Oct 2026

    Open in Manufacturing

    4 open listingsView all →
    Manufacturing🇬🇧United Kingdom

    Manufacturing Scale-up Research for Automotive and Aerospace

    Secure £0.6M-£5.8M in funding to scale up innovative manufacturing technologies for automotive and aerospace applications.

    est.£17,600,000
    Published 14 Oct 2026
    Manufacturing🇬🇧United Kingdom

    Advanced Manufacturing Scale-up Network

    A £5.625 million funding program to establish a collaborative network accelerating manufacturing innovation scale-up in aerospace and automotive sectors over 60 months.

    est.£5,625,000
    Published 14 Oct 2026
    Manufacturing🇬🇧United Kingdom

    Workwear and Military Clothing Supply Framework Agreement

    Leidos is recruiting suppliers for a 5-year framework agreement to provide workwear garments to the UK Ministry of Defence, valued between £20.9m and £52.3m.

    est.£52,343,000Leidos Supply Limited
    Published 13 Oct 2026
    Manufacturing🇬🇧United Kingdom

    Gorleston Cliffs Play Area Redesign and Refurbishment

    Opportunity to redesign and refurbish Gorleston Cliffs Play Area with new play equipment and facilities in Great Yarmouth, Norfolk.

    est.£69,000Great Yarmouth Borough Council
    Published 13 Oct 2026
    Take action
    View on sourceFind a Tender

    Original closed notice on the publisher's site

    Publisher
    UK Cabinet Office
    Licence
    OGL v3.0
    Source
    find-tender.service.gov.uk
    Record ID
    ocds-h6vhtk-06b976

    Track

    Find out who wins

    Sonar emails you the day this is awarded or cancelled.

    Tell me who wins

    Free · No card

    Your fit

    Could you win the next one?

    This one has closed. Sonar reads Southern Water Services Limited's work like this against your business and sends the next one that fits, every Monday.

    Check my fit

    Free · Matches every Monday

    SW
    Buyer
    Southern Water Services Limited
    Sector
    Manufacturing