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.

    ContractsAnaerobic Digester Capacity and Sediment Assessment Using Lithium Trace Testing
    Awarded contract

    Anaerobic Digester Capacity and Sediment Assessment Using Lithium Trace Testing

    Awarded
    £1.2m
    Published 20 Jul 2026

    Develop and conduct lithium trace testing methodology to assess anaerobic digester capacity, mixing efficiency, and sediment accumulation for regulatory compliance.

    🇬🇧United Kingdom· North WestPublished 20 Jul 2026· 3 months agoviaFind a Tender
    Awarded
    £1.2m
    Published 20 Jul 2026

    Decision brief

    4 fields
    • Contract value
      £1,200,000
      Pounds sterling
    • Closing date
      Not published
      No closing date published
    • Sector
      Engineering
      Browse related listings
    • Location
      🇬🇧United Kingdom
      North West

    Suppliers

    1 supplier
    • NW
      NSI Water and Wastewater Solutions Ltd
    Lead contractor

    Lifecycle

    Awarded

    Contract awarded. Originally published 3 months ago.

    20 July 2026
    Awarded — no open tender advertised

    Brief

    The Bioresource and Energy Services team seeks a qualified supplier to conduct non-intrusive tank capacity and sediment assessments of Anaerobic Digesters using Lithium chloride as a trace element. This testing is required every 5 years to comply with Environmental Permitting (England & Wales) Regulations 2016 and the Industrial Emissions Directive (IED), which control pollution to air, water, and land from industrial activities. The supplier must develop and implement a methodology to determine the effective volume of anaerobic digesters over a short testing period by measuring lithium concentration at steady state. The effective volume will be calculated using the dose of lithium chloride added, measured lithium concentration, and background concentration established before testing. The final report must present: mixing efficiency, hydraulic retention time (HRT), identification of short-circuiting or dead zones, and sediment/grit accumulation levels. Lithium chloride will be dosed into each digester's feed line or other suitable location. Prior to dosing, initial samples must be collected from designated sampling points (identified during a pre-test site visit) to establish baseline lithium concentrations. The supplier should have expertise in trace element testing, anaerobic digester operations, and environmental compliance.

    Track record

    5 awards · 5 winners
    Open panel

    Mostly framework call-offs rather than head-to-head competition.

    In engineering, UNITED UTILITIES WATER LIMITED has awarded 5 contracts to 5 suppliers.

    Who wins here
    1. NSI Water and Wastewater Solutions Ltd1× · 20%
    2. AQUALOGIC (WC) LTD1× · 20%
    3. Amelio Utilities Ltd1× · 20%
    4. Element Materials Technology Environmental UK Ltd1× · 20%
    5. Oss Enviro (Global) Ltd1× · 20%

    Across engineering, the most active winners are AECOM LTD, WSP UK LIMITED, OVE ARUP PARTNERS LIMITED — the field to beat, or your route in as a partner.

    More from UNITED UTILITIES WATER LIMITED

    4 listingsView all →
    Engineering🇬🇧United Kingdom

    Design and Integration Partner for Windermere Water Quality Programme

    United Utilities seeks a Design and Integration Partner to lead the design, planning, and regulatory approval process for the Only Rainwater into Windermere programme, a major infrastructure initiative to restore Windermere's water quality through comprehensive wastewater and surface water management solutions.

    est.£600,000,000UNITED UTILITIES WATER LIMITED
    Published 5 Nov 2026
    Construction🇬🇧United Kingdom

    United Utilities Rainwater Management Solutions Framework

    United Utilities is seeking 5 framework partners to deliver rainwater management and sustainable drainage solutions over the next 12-18 months through Design & Build or Build Only contracts.

    est.£40,000,000UNITED UTILITIES WATER LIMITED
    Published 2 Nov 2026
    AwardedProfessional Services🇬🇧United Kingdom

    HR Advisory and Case Management Services

    Fully managed HR advisory and case management service providing telephone support, digital platform access, and integrated occupational health coordination for line managers.

    £1,250,000UNITED UTILITIES WATER LIMITED
    Published 30 Oct 2026
    OpenIT & Software🇬🇧United Kingdom

    Cloud-Based Video Knowledge Platform Services

    Procurement of a cloud-based video knowledge platform enabling secure capture, management, and analysis of short-form video content to support organizational learning and continuous improvement.

    UNITED UTILITIES WATER LIMITED
    Published 28 Oct 2026

    Open in Engineering

    4 open listingsView all →
    OpenEngineering🇬🇧United Kingdom

    Architect-Led Design Team for Pierhead Street Mixed-Use Housing Development

    Architect-led design team required for early-stage development of a mixed-tenure housing scheme at Pierhead Street, Butetown (RIBA stages 0-2).

    est.£500,000Cardiff Council
    Published 10 Nov 2026
    Engineering🇬🇧United Kingdom

    Highway Tree Felling Services

    Opportunity to provide tree felling and removal services on highways through the London Construction Programme Dynamic Purchasing System.

    est.£90,000LONDON BOROUGH OF HARINGEY
    Published 10 Nov 2026
    Engineering🇬🇧United Kingdom

    Highway Tree Works - Dynamic Purchasing System (DPS1 1443 & 1431)

    Register on the DPS1 frameworks to provide highway tree works and arboricultural services through call-off contracts.

    est.£90,000LONDON BOROUGH OF HARINGEY
    Published 10 Nov 2026
    OpenEngineering🇬🇧United Kingdom

    Professional Services Framework 2.0

    L&Q seeks specialist professional services across six areas including project delivery, analytics, technology, risk management, and change management through a £8M framework agreement.

    est.£8,000,000LONDON & QUADRANT HOUSING TRUST
    Published 10 Nov 2026
    Take action
    View on sourceFind a Tender

    Award notice and full record on the publisher's site

    Publisher
    UK Cabinet Office
    Licence
    OGL v3.0
    Source
    find-tender.service.gov.uk
    Record ID
    ocds-h6vhtk-05e500

    Your fit

    Could you win the next one?

    This went to NSI Water and Wastewater Solutions Ltd. Sonar reads UNITED UTILITIES WATER LIMITED's work like this against your business — who holds it, and whether you could compete or partner next time.

    Check my fit

    Free · Matches every Monday

    UU
    Buyer
    UNITED UTILITIES WATER LIMITED
    Sector
    Engineering