Supply & Install of Modular Treatment Equipment: Preliminary, Primary Filtration and Fixed Film Biological Systems

SEVERN TRENT WATER LIMITED

This public procurement record has 3 releases in its history.

TenderUpdate

28 Jul 2026 at 07:01

Tender

24 Jul 2026 at 14:32

Planning

23 Mar 2026 at 16:45

Summary of the contracting process

This public procurement contracting process, initiated in the planning stage by Severn Trent Water Limited, involves the Supply and Install of Modular Treatment Equipment, specifically Preliminary, Primary Filtration, and Fixed Film Biological Systems. The procurement falls under the industry category of machinery for the treatment of sewage and spans multiple regions across the United Kingdom, including the UKC, UKD, UKE, UKF, UKG, UKH, UKI, UKJ, and UKK regions. Key dates include the procurement process planning initiated in March 2026, with engagement activities scheduled for April 2026. The framework agreement is established under utilities special regime regulations, and Severn Trent Water Limited has outlined a competitive flexible procurement method featuring a multi-stage evaluation process. The anticipated contract period extends from December 2026 to December 2029, with provisions for renewal.

This tender presents significant opportunities for businesses specialising in modular treatment equipment, particularly those capable of designing, supplying, and installing containerised systems for sewage treatment. Companies with experience in providing innovative filtration and biological treatment solutions, along with the capacity for complex civil works, stand to benefit from engaging in this process. The tender offers incentives for small and medium-sized enterprises (SMEs) as the procurement procedure includes a framework agreement without reopening competition. With an emphasis on quality, sustainability, and cost-effectiveness, companies proficient in cutting-edge sewage treatment technologies equipped to meet stringent British/European standards and specific performance criteria will likely thrive in this competitive environment.

How relevant is this notice?

Notice Title

Supply & Install of Modular Treatment Equipment: Preliminary, Primary Filtration and Fixed Film Biological Systems

Notice Description

This tender process is for the provision of Supply & Install of Modular Treatment Equipment: Fixed-Film Biological, Preliminary and Primary Filtration Systems. A summary of the scope across all Lots forming part of this tender is stated below. The Modular Treatment framework will consist of suppliers who have the ability to design, supply & install containerised assets on a flatbed vehicle as a standalone solution either be removed via roll on/roll off functionality or craneage. This framework will also consider semi modular assets which are assembled/installed by the asset supplier and involve greater civil complexity due to these assets requiring partial burying, but typically without the requirement for additional shuttering that's associated with traditional concrete assets. These assets will either be purchased by the Utilities directly and the novated or free issued to the Utilities Capital Construction supply chain partners.

Lot Information

Modular, Preliminary Treatment Solutions

he Goods to be supplied under this Agreement shall comprise modular inlet screening solutions, with optional grit and/or FOG removal modules, for applications up to 100 l/s. The Supplier shall work with the Client to develop and finalise site-specific proposals under each Call Off Contract based on information provided by the Client. Solutions shall be containerised, modular, quick to install, durable, and designed to minimise operational and maintenance requirements, while enabling safe operation, monitoring, and integration with existing control and SCADA systems. Where required, solutions may also include grit removal, FOG removal, screenings dewatering, and associated ancillary equipment. All materials, equipment, and components supplied shall be new, fit for purpose, compliant with relevant British/European Standards, WIMES requirements, and OEM specifications. Full technical requirements, performance criteria, and detailed specifications are contained within the Technical Specification issued as part of the PQQ documentation.

Renewal: Option to extend framework 1+1 at the end of the initial period.

Modular Primary Filtration Solutions

The Goods to be supplied under this Agreement shall comprise modular primary filtration solutions, using belt or drum filters as an alternative to primary settlement tanks, for applications up to 100 l/s. The Supplier shall work with the Client to develop and finalise site-specific proposals under each Call Off Contract based on information provided by the Client. Solutions shall be capable of achieving the required suspended solids removal performance, operate with minimal manual intervention, and include all necessary ancillary equipment, controls, sludge handling, monitoring, and SCADA integration to support reliable operation. Depending on site requirements, solutions may also include redundancy, flow balancing, wash water systems, FOG mitigation measures, and long-term service support. All materials, equipment, and components supplied shall be new, fit for purpose, compliant with relevant British/European Standards, WIMES requirements, and OEM specifications. Full technical requirements, performance criteria, and detailed specifications are contained within the Technical Specification issued as part of the PQQ documentation.

Renewal: Option to extend framework 1+1 at the end of the initial period.

Modular, Fixed-film Biological Treatment Solutions - Secondary

he Goods to be supplied under this Agreement shall comprise modular fixed-film biological treatment solutions, including Submerged Aerated Filters (SAFs) and Moving Bed Biofilm Reactors (MBBRs), for secondary BOD reduction and secondary or tertiary ammonia removal. The Supplier shall work with the Client to develop and finalise site-specific proposals under each Call Off Contract based on information provided by the Client. Solutions shall be modular, containerised where appropriate, designed for efficient installation and operation, and include all necessary process equipment, controls, monitoring, sludge management, aeration requirements, and SCADA integration to achieve the required treatment performance across the specified population equivalent ranges. Depending on site requirements, solutions may also include blower systems, dissolved oxygen monitoring, multiple treatment zones, flow balancing, and parallel treatment arrangements. All materials, equipment, and components supplied shall be new, fit for purpose, compliant with relevant British/European Standards, WIMES requirements, and OEM specifications. Full technical requirements, performance criteria, sizing criteria, and detailed specifications are contained within the Technical Specification issued as part of the PQQ documentation.

Renewal: Option to extend framework 1+1 at the end of the initial period.

Modular, Fixed-film Biological Treatment Solutions - Tertiary & Alternating and non alternating

The Goods to be supplied under this Agreement shall comprise modular fixed-film biological treatment solutions, including Submerged Aerated Filters (SAFs) and Moving Bed Biofilm Reactors (MBBRs), for tertiary ammonia removal applications up to a nominal population equivalent of 15,000 PE. The Supplier shall work with the Client to develop and finalise site-specific proposals under each Call Off Contract based on information provided by the Client. Solutions shall be modular, containerised where appropriate, designed for efficient installation and operation, and include all necessary process equipment, controls, monitoring, aeration, sludge management, and SCADA integration to achieve the required treatment performance. Depending on site requirements, solutions may also include blower systems, dissolved oxygen monitoring, multiple treatment zones, flow balancing, and parallel treatment arrangements. All materials, equipment, and components supplied shall be new, fit for purpose, compliant with relevant British/European Standards, WIMES requirements, and OEM specifications. Full technical requirements, performance criteria, population equivalent sizing bands, and detailed specifications are contained within the Technical Specification issued as part of the PQQ documentation.

Renewal: Option to extend framework 1+1 at the end of the initial period.

Planning Information

We are keen to engage with interested suppliers to help design and tailor a sourcing strategy and procurement process that meets our requirement but is also suitable to the widest group of suppliers. Any future Tender Notice will be published and response to this pre market engagement is optional and does not contribute to any procurement process. We invite suppliers to complete the following form and we will be in touch: https://forms.office.com/e/tqnRV70vST

Publication & Lifecycle

Open Contracting ID
ocds-h6vhtk-0671eb
Publication Source
Find A Tender Service
Latest Notice
https://www.find-tender.service.gov.uk/Notice/070991-2026
Current Stage
Tender
All Stages
Planning, Tender

Procurement Classification

Notice Type
UK4 - Tender Notice
Procurement Type
Framework
Procurement Category
Goods
Procurement Method
Open
Procurement Method Details
Competitive flexible procedure
Tender Suitability
SME
Awardee Scale
Not specified

Common Procurement Vocabulary (CPV)

CPV Divisions

42 - Industrial machinery


CPV Codes

42996000 - Machinery for the treatment of sewage

Notice Value(s)

Tender Value
£19,372,500 £10M-£100M
Lots Value
£25,800,000 £10M-£100M
Awards Value
Not specified
Contracts Value
Not specified

Notice Dates

Publication Date
28 Jul 20261 weeks ago
Submission Deadline
21 Aug 20263 weeks to go
Future Notice Date
10 Apr 2026Expired
Award Date
Not specified
Contract Period
14 Dec 2026 - 14 Dec 2029 3-4 years
Recurrence
Not specified

Notice Status

Tender Status
Active
Lots Status
Active
Awards Status
Not Specified
Contracts Status
Not Specified

Contracting Authority (Buyer)

Main Buyer
SEVERN TRENT WATER LIMITED
Additional Buyers

HAFREN DYFRDWY CYFYNGEDIG

Contact Name
Available with D3 Tenders Premium →
Contact Email
Available with D3 Tenders Premium →
Contact Phone
Available with D3 Tenders Premium →

Buyer Location

Locality
COVENTRY
Postcode
CV1 2LZ
Post Town
Coventry
Country
Wales

Major Region (ITL 1)
TLL Wales
Basic Region (ITL 2)
TLL3 North Wales
Small Region (ITL 3)
TLL34 Flintshire and Wrexham
Delivery Location
TLC North East (England), TLD North West (England), TLE Yorkshire and The Humber, TLF East Midlands (England), TLG West Midlands (England), TLH East (England), TLI London, TLJ South East (England), TLK South West (England)

Local Authority
Wrexham
Electoral Ward
Ponciau
Westminster Constituency
Montgomeryshire and Glyndwr

Open Contracting Data Standard (OCDS)

View full OCDS Record for this contracting process

JSON Markdown

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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                                    "number": 60,
                                    "weight": "percentageExact"
                                }
                            ]
                        },
                        {
                            "type": "quality",
                            "name": "Sustainability",
                            "numbers": [
                                {
                                    "number": 10,
                                    "weight": "percentageExact"
                                }
                            ]
                        },
                        {
                            "type": "cost",
                            "name": "Price",
                            "numbers": [
                                {
                                    "number": 30,
                                    "weight": "percentageExact"
                                }
                            ]
                        },
                        {
                            "type": "quality",
                            "name": "Quality",
                            "numbers": [
                                {
                                    "number": 60,
                                    "weight": "percentageExact"
                                }
                            ]
                        },
                        {
                            "type": "quality",
                            "name": "Sustainability",
                            "numbers": [
                                {
                                    "number": 10,
                                    "weight": "percentageExact"
                                }
                            ]
                        },
                        {
                            "type": "cost",
                            "name": "Price",
                            "numbers": [
                                {
                                    "number": 30,
                                    "weight": "percentageExact"
                                }
                            ]
                        }
                    ]
                },
                "suitability": {
                    "sme": true
                },
                "renewal": {
                    "description": "Option to extend framework 1+1 at the end of the initial period."
                }
            },
            {
                "id": "2",
                "title": "Modular Primary Filtration Solutions",
                "description": "The Goods to be supplied under this Agreement shall comprise modular primary filtration solutions, using belt or drum filters as an alternative to primary settlement tanks, for applications up to 100 l/s. The Supplier shall work with the Client to develop and finalise site-specific proposals under each Call Off Contract based on information provided by the Client. Solutions shall be capable of achieving the required suspended solids removal performance, operate with minimal manual intervention, and include all necessary ancillary equipment, controls, sludge handling, monitoring, and SCADA integration to support reliable operation. Depending on site requirements, solutions may also include redundancy, flow balancing, wash water systems, FOG mitigation measures, and long-term service support. All materials, equipment, and components supplied shall be new, fit for purpose, compliant with relevant British/European Standards, WIMES requirements, and OEM specifications. Full technical requirements, performance criteria, and detailed specifications are contained within the Technical Specification issued as part of the PQQ documentation.",
                "status": "active",
                "value": {
                    "amountGross": 11160000,
                    "amount": 9300000,
                    "currency": "GBP"
                },
                "awardCriteria": {
                    "criteria": [
                        {
                            "type": "quality",
                            "name": "Quality",
                            "numbers": [
                                {
                                    "number": 60,
                                    "weight": "percentageExact"
                                }
                            ]
                        },
                        {
                            "type": "quality",
                            "name": "Sustainability",
                            "numbers": [
                                {
                                    "number": 10,
                                    "weight": "percentageExact"
                                }
                            ]
                        },
                        {
                            "type": "cost",
                            "name": "Price",
                            "numbers": [
                                {
                                    "number": 30,
                                    "weight": "percentageExact"
                                }
                            ]
                        },
                        {
                            "type": "quality",
                            "name": "Quality",
                            "numbers": [
                                {
                                    "number": 60,
                                    "weight": "percentageExact"
                                }
                            ]
                        },
                        {
                            "type": "quality",
                            "name": "Sustainability",
                            "numbers": [
                                {
                                    "number": 10,
                                    "weight": "percentageExact"
                                }
                            ]
                        },
                        {
                            "type": "cost",
                            "name": "Price",
                            "numbers": [
                                {
                                    "number": 30,
                                    "weight": "percentageExact"
                                }
                            ]
                        }
                    ]
                },
                "suitability": {
                    "sme": true
                },
                "contractPeriod": {
                    "startDate": "2026-12-14T00:00:00Z",
                    "endDate": "2029-12-14T23:59:59Z",
                    "maxExtentDate": "2031-10-20T23:59:59+01:00"
                },
                "hasRenewal": true,
                "renewal": {
                    "description": "Option to extend framework 1+1 at the end of the initial period."
                }
            },
            {
                "id": "3a",
                "title": "Modular, Fixed-film Biological Treatment Solutions - Secondary",
                "description": "he Goods to be supplied under this Agreement shall comprise modular fixed-film biological treatment solutions, including Submerged Aerated Filters (SAFs) and Moving Bed Biofilm Reactors (MBBRs), for secondary BOD reduction and secondary or tertiary ammonia removal. The Supplier shall work with the Client to develop and finalise site-specific proposals under each Call Off Contract based on information provided by the Client. Solutions shall be modular, containerised where appropriate, designed for efficient installation and operation, and include all necessary process equipment, controls, monitoring, sludge management, aeration requirements, and SCADA integration to achieve the required treatment performance across the specified population equivalent ranges. Depending on site requirements, solutions may also include blower systems, dissolved oxygen monitoring, multiple treatment zones, flow balancing, and parallel treatment arrangements. All materials, equipment, and components supplied shall be new, fit for purpose, compliant with relevant British/European Standards, WIMES requirements, and OEM specifications. Full technical requirements, performance criteria, sizing criteria, and detailed specifications are contained within the Technical Specification issued as part of the PQQ documentation.",
                "status": "active",
                "value": {
                    "amountGross": 8400000,
                    "amount": 7000000,
                    "currency": "GBP"
                },
                "awardCriteria": {
                    "criteria": [
                        {
                            "type": "quality",
                            "name": "Quality",
                            "numbers": [
                                {
                                    "number": 60,
                                    "weight": "percentageExact"
                                }
                            ]
                        },
                        {
                            "type": "quality",
                            "name": "Sustainability",
                            "numbers": [
                                {
                                    "number": 10,
                                    "weight": "percentageExact"
                                }
                            ]
                        },
                        {
                            "type": "cost",
                            "name": "Price",
                            "numbers": [
                                {
                                    "number": 30,
                                    "weight": "percentageExact"
                                }
                            ]
                        },
                        {
                            "type": "quality",
                            "name": "Quality",
                            "numbers": [
                                {
                                    "number": 60,
                                    "weight": "percentageExact"
                                }
                            ]
                        },
                        {
                            "type": "quality",
                            "name": "Sustainability",
                            "numbers": [
                                {
                                    "number": 10,
                                    "weight": "percentageExact"
                                }
                            ]
                        },
                        {
                            "type": "cost",
                            "name": "Price",
                            "numbers": [
                                {
                                    "number": 30,
                                    "weight": "percentageExact"
                                }
                            ]
                        }
                    ]
                },
                "suitability": {
                    "sme": true
                },
                "contractPeriod": {
                    "startDate": "2026-12-14T00:00:00Z",
                    "endDate": "2029-12-14T23:59:59Z",
                    "maxExtentDate": "2031-10-20T23:59:59+01:00"
                },
                "hasRenewal": true,
                "renewal": {
                    "description": "Option to extend framework 1+1 at the end of the initial period."
                }
            },
            {
                "id": "3b",
                "title": "Modular, Fixed-film Biological Treatment Solutions - Tertiary & Alternating and non alternating",
                "description": "The Goods to be supplied under this Agreement shall comprise modular fixed-film biological treatment solutions, including Submerged Aerated Filters (SAFs) and Moving Bed Biofilm Reactors (MBBRs), for tertiary ammonia removal applications up to a nominal population equivalent of 15,000 PE. The Supplier shall work with the Client to develop and finalise site-specific proposals under each Call Off Contract based on information provided by the Client. Solutions shall be modular, containerised where appropriate, designed for efficient installation and operation, and include all necessary process equipment, controls, monitoring, aeration, sludge management, and SCADA integration to achieve the required treatment performance. Depending on site requirements, solutions may also include blower systems, dissolved oxygen monitoring, multiple treatment zones, flow balancing, and parallel treatment arrangements. All materials, equipment, and components supplied shall be new, fit for purpose, compliant with relevant British/European Standards, WIMES requirements, and OEM specifications. Full technical requirements, performance criteria, population equivalent sizing bands, and detailed specifications are contained within the Technical Specification issued as part of the PQQ documentation.",
                "status": "active",
                "value": {
                    "amountGross": 8400000,
                    "amount": 7000000,
                    "currency": "GBP"
                },
                "awardCriteria": {
                    "criteria": [
                        {
                            "type": "quality",
                            "name": "Quality",
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                                {
                                    "number": 60,
                                    "weight": "percentageExact"
                                }
                            ]
                        },
                        {
                            "type": "quality",
                            "name": "Sustainability",
                            "numbers": [
                                {
                                    "number": 10,
                                    "weight": "percentageExact"
                                }
                            ]
                        },
                        {
                            "type": "cost",
                            "name": "Price",
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                        },
                        {
                            "type": "quality",
                            "name": "Quality",
                            "numbers": [
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                            ]
                        },
                        {
                            "type": "quality",
                            "name": "Sustainability",
                            "numbers": [
                                {
                                    "number": 10,
                                    "weight": "percentageExact"
                                }
                            ]
                        },
                        {
                            "type": "cost",
                            "name": "Price",
                            "numbers": [
                                {
                                    "number": 30,
                                    "weight": "percentageExact"
                                }
                            ]
                        }
                    ]
                },
                "suitability": {
                    "sme": true
                },
                "contractPeriod": {
                    "startDate": "2026-12-14T00:00:00Z",
                    "endDate": "2029-12-14T23:59:59Z",
                    "maxExtentDate": "2031-10-20T23:59:59+01:00"
                },
                "hasRenewal": true,
                "renewal": {
                    "description": "Option to extend framework 1+1 at the end of the initial period."
                }
            }
        ],
        "status": "active",
        "procurementMethod": "open",
        "procurementMethodDetails": "Competitive flexible procedure",
        "procedure": {
            "features": "Bidders will be required to complete and submit a Pre-Qualification Questionnaire (PQQ). Responses will be evaluated against the criteria set out in the PQQ briefing pack, and the six highest-scoring suppliers in each lot will be shortlisted to participate in the next stage of the procurement process. Shortlisted bidders will then be invited to submit a detailed proposal in response to the Request for Proposal (RFP). The procurement process will then comprise a number of subsequent evaluation, scoring and moderation stages, as detailed within the RFP briefing pack. As an initial assessment, bidders' responses to the proposed terms and conditions will be reviewed before any other part of the submission. These stages may include proposal evaluation, supplier clarification discussions, presentations, site visits and commercial negotiations, where deemed appropriate by Severn Trent. Severn Trent reserves the right to amend, combine or omit stages as set out in the RFP briefing pack and in accordance with the Competitive Flexible Procedure."
        },
        "submissionMethodDetails": "https://portal.us.bn.cloud.ariba.com/dashboard/public/appext/comsapsbncdiscoveryui#/RfxEvent/preview/1110019802?anId=ANONYMOUS",
        "submissionTerms": {
            "electronicSubmissionPolicy": "allowed",
            "languages": [
                "en"
            ]
        },
        "tenderPeriod": {
            "endDate": "2026-08-21T23:59:00+01:00"
        },
        "awardPeriod": {
            "endDate": "2026-11-30T23:59:59Z"
        },
        "documents": [
            {
                "id": "conflictOfInterest",
                "documentType": "conflictOfInterest",
                "description": "Not published"
            },
            {
                "id": "070410-2026",
                "documentType": "tenderNotice",
                "noticeType": "UK4",
                "description": "Tender notice on Find a Tender",
                "url": "https://www.find-tender.service.gov.uk/Notice/070410-2026",
                "datePublished": "2026-07-24T15:32:27+01:00",
                "format": "text/html"
            },
            {
                "id": "070991-2026",
                "documentType": "tenderNotice",
                "noticeType": "UK4",
                "description": "Tender notice on Find a Tender",
                "url": "https://www.find-tender.service.gov.uk/Notice/070991-2026",
                "datePublished": "2026-07-28T08:01:31+01:00",
                "format": "text/html"
            }
        ],
        "amendments": [
            {
                "id": "070991-2026",
                "description": "- Link to SAP Ariba corrected - Removed character from title that was displaying incorrectly"
            }
        ]
    },
    "language": "en"
}