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PROCUREMENT OPPORTUNITY

Procurement of Tank Covers

SEVERN TRENT WATER LIMITED · Tender notice on Find a Tender

Tender information last checkedLast checked 27 Sept 2026, 17:26.

Opportunity overview

Overview The Contracting Authority requires the design, supply and installation of tank cover systems for wastewater and water treatment assets. As part of its AMP8 Net Zero Investment Programme, the Contracting Authority intends to deliver Cover and Treat solutions across approximately 23 sites (subject to change) to reduce process emissions by approximately 19,618 tCO₂e. Hafren Dyfrdwy also has an AMP8 regulatory commitment to deliver a Cover and Treat solution at one site, contributing a further reduction of approximately 411 tCO₂e. The scope includes Activated Sludge Plant (ASP) lanes and Liquor Treatment Plant (LTP) tanks associated with wastewater and sludge treatment processes. These assets operate continuously and contain biologically active, aerated liquors that generate off-gases during normal operation. Any proposed tank cover solution must be suitable for installation over live operational treatment assets and must not adversely affect process performance, operation, maintenance activities or access requirements. The final number, size and location of sites may be subject to change and will be defined within the procurement documents. Anticipated Scope of Contract The successful suppliers will be required to design, manufacture, supply, deliver, install, test and commission impermeable tank cover systems for Activated Sludge Plants (ASPs) and Liquor Treatment Plants (LTPs). The anticipated scope includes all activities necessary to provide a complete and operational tank cover solution, including design development, calculations, drawings, fabrication, quality assurance, delivery, installation, testing, commissioning, operation and maintenance documentation and warranties. The successful suppliers will be expected to assess the suitability of existing tank structures to support the proposed cover system, including consideration of structural condition, load paths, connection methodology and access requirements. Intrusive investigations and structural remediation works are not currently anticipated to form part of the scope unless specifically instructed. The successful suppliers will be required to work collaboratively with the Contracting Authority and its appointed designers to define interfaces between the tank cover system and any future extraction or treatment systems. The design and delivery of such extraction and treatment systems, including extraction fans, ductwork and treatment processes, is not expected to form part of this contract.

Classification

  • CPV44112400 — Roof
  • CPV44112410 — Roof frames
  • CPV44112420 — Roof supports
  • CPV44112500 — Roofing materials
  • CPV44400000 — Miscellaneous fabricated products and related items
  • CPV44600000 — Tanks, reservoirs and containers; central-heating radiators and boilers
  • CPV45252200 — Purification plant equipment
  • CPV45260000 — Roof works and other special trade construction works
  • CPV65100000 — Water distribution and related services

Lots

  • Lot 1£37.4m

Documents and notices

Published notice details

Additional information from the published procurement release. Fields appear only when supplied by the source; check the original notice and tender documents before acting.

Scope, procedure and submissions

Id
WS3133144934
Status
active
Procurement Method
selective
Procurement Method Details
Competitive flexible procedure
Main Procurement Category
goods
Above Threshold
Yes
Expression Of Interest Deadline
22 Jul 2026, 14:00

Legal basis

Id
2023/54
Scheme
UKPGA

Procedure

Features
Stage 1 - Pre-Qualification Questionnaire (PQQ) Interested suppliers will be required to complete a Pre-Qualification Questionnaire (PQQ) to assess their suitability to participate in the procurement process. Evaluation may include, but is not limited to, legal standing, economic and financial standing, insurance, health and safety, risk management, quality assurance, environmental management systems (EMS), corporate responsibility, social value, information security, national security requirements, electronic ordering and payment capability, and relevant experience. The Contracting Authority reserves the right to shortlist suppliers to progress to Stage 2. It is anticipated that a minimum of seven (7) suppliers will be shortlisted, although the Contracting Authority reserves the right to vary this number. Stage 2 - Request for Proposal (RFP) Shortlisted suppliers will be invited to submit detailed proposals in response to the Contracting Authority's requirements. Tender submissions will be evaluated in accordance with the award criteria and methodology set out in the tender documents. Shortlisted Suppliers will be expected to attend site visits during the RFP period. Following evaluation of the written proposals, the Contracting Authority reserves the right to shortlist suppliers to progress to subsequent stages of the procurement. Stage 3 - Presentations Following evaluation of the written RFP submissions, shortlisted suppliers may be invited to deliver presentations, demonstrations and/or participate in question-and-answer sessions. Information provided during this stage may be taken into account as part of the overall tender evaluation process. The Contracting Authority reserves the right to further shortlist participating suppliers following this stage. Stage 4 - Clarification and/or Negotiation The Contracting Authority reserves the right to conduct written and/or verbal clarification meetings and negotiations with some or all participating suppliers. Negotiations may cover all aspects of the submitted proposals. The Contracting Authority reserves the right to conduct one or more rounds of clarification and/or negotiation and may further reduce the number of suppliers participating in the process at any stage. Stage 5 - Best and Final Offer (BAFO) Following any clarification and/or negotiation stages, shortlisted suppliers may be invited to submit a Best and Final Offer (BAFO). Such submissions should reflect the outcomes of discussions held during the procurement process and represent the supplier's final tender submission. Stage 6 - Final Evaluation and Contract Award Where requested, BAFO submissions will be evaluated in accordance with the published award criteria. The Contracting Authority reserves the right to award the contract on the basis of the initial tenders received, without undertaking presentations, clarifications, negotiations or requesting BAFO submissions, where it considers this to be appropriate. The Contracting Authority further reserves the right to modify, combine, omit, repeat or introduce additional stages of the Competitive Flexible Procedure, and to reduce the number of participating suppliers at any stage, as described in the procurement documents. Further information regarding the procurement process will be provided within the relevant tender documentation issued at each stage.

Special regime

utilities

Techniques

Has Framework Agreement
Yes

Framework Agreement

Maximum Participants
4
Method
withAndWithoutReopeningCompetition
Type
closed
Description
Please see Competitive Flexible Procedure description for the contract award process. The Contracting Authority reserves the right to run an Expression of Interest to determine supplier's capacity in meeting the requirements. In such instance, the EOI will be issued to all Framework Agreement suppliers. The Contracting Authority may, at its discretion, award call-off contracts of any value directly under the Framework without the requirement to conduct a mini- competition with all appointed Framework suppliers. This may include awards made with or without a prior Expression of Interest (EOI) process. Where making a direct award, the Contracting Authority reserves the right to request a written submission from the respective Framework Supplier to support the finalisation of the call-off contract. Where the Contracting Authority runs a mini competition, all Framework Agreement suppliers will be invited. As part of the mini competition process the Utility will issue an Instructions Briefing Pack outlining the process and how submissions will be evaluated. This may include criteria such as: • Supplier capacity and availability to meet specified timescales • Lead times • Costs

Submission terms

Electronic Submission Policy
allowed

Languages

en

Enquiry period

Ends
15 Jul 2026, 16:00

Expected award period

Ends
15 Jan 2027, 23:59

Lots and requirements

Entry 1
Id
1
Status
active
Has Renewal
Yes

Value

Including VAT
44,880,000
Amount
37,400,000
Currency
GBP

Award criteria

Criteria

Criterion 1
Type
quality
Name
Quality

Numbers

Entry 1
Number
70
Weight
percentageExact
Criterion 2
Type
price
Name
Price

Numbers

Entry 1
Number
30
Weight
percentageExact

Second Stage

Minimum Candidates
7

Selection criteria

Criteria

Criterion 1
Type
economic
Description
Please see tender documentation
Criterion 2
Type
technical
Description
Please see tender documentation
Criterion 3
Description
The Contracting Authority envisages to shortlist the seven (7) highest ranking bidders, following the PQQ response evaluation, to progress to the next stage of the tender process.
For Reduction
Yes

Contract period

Starts
15 Jan 2027, 00:00
Ends
14 Jan 2031, 23:59
Max Extent Date
14 Jan 2035, 23:59

Renewal

Description
The Contracting Authority intends to establish a Framework Agreement for an initial term of four (4) years, anticipated to commence in January 2027. The Framework Agreement may be extended by up to a further four (4) years at the Authority's discretion, in increments to be determined by the Authority, for example 1+1+1+1 years, giving a maximum framework term of eight (8) years.

Items and delivery

Item 1
Id
1
Related Lot
1

Additional Classifications

Entry 1
Scheme
CPV
Id
44112400
Description
Roof
Entry 2
Scheme
CPV
Id
44112410
Description
Roof frames
Entry 3
Scheme
CPV
Id
44112420
Description
Roof supports
Entry 4
Scheme
CPV
Id
44112500
Description
Roofing materials
Entry 5
Scheme
CPV
Id
44400000
Description
Miscellaneous fabricated products and related items
Entry 6
Scheme
CPV
Id
44600000
Description
Tanks, reservoirs and containers; central-heating radiators and boilers
Entry 7
Scheme
CPV
Id
45252200
Description
Purification plant equipment
Entry 8
Scheme
CPV
Id
45260000
Description
Roof works and other special trade construction works
Entry 9
Scheme
CPV
Id
65100000
Description
Water distribution and related services

Delivery locations

Entry 1
Region
UKC
Country
GB
Country Name
United Kingdom
Entry 2
Region
UKD
Country
GB
Country Name
United Kingdom
Entry 3
Region
UKE
Country
GB
Country Name
United Kingdom
Entry 4
Region
UKF
Country
GB
Country Name
United Kingdom
Entry 5
Region
UKG
Country
GB
Country Name
United Kingdom
Entry 6
Region
UKH
Country
GB
Country Name
United Kingdom
Entry 7
Region
UKI
Country
GB
Country Name
United Kingdom
Entry 8
Region
UKJ
Country
GB
Country Name
United Kingdom
Entry 9
Region
UKK
Country
GB
Country Name
United Kingdom
Entry 10
Region
UKL
Country
GB
Country Name
United Kingdom

Published documents

Entry 1
Id
conflictOfInterest
Document Type
conflictOfInterest
Description
Not published
Entry 2
Id
059640-2026
Document Type
tenderNotice
Notice Type
UK4
Description
Tender notice on Find a Tender
Published
25 Jun 2026, 08:00
Format
text/html

Buyer, suppliers and contacts

Organisation 1
Name
SEVERN TRENT WATER LIMITED
Id
GB-COH-02366686

Identifier

Scheme
GB-COH
Id
02366686

Additional Identifiers

Entry 1
Scheme
GB-PPON
Id
PQQN-5222-QDXR

Address

Street Address
Severn Trent Centre
Locality
Coventry
Postal Code
CV1 2LZ
Country
GB
Country Name
United Kingdom
Region
UKG33

Contact

Roles

buyer

Details

Classifications

Entry 1
Scheme
UK_CA_TYPE
Id
privateUtility
Description
Private utility

Recorded locations

  • Buyer location · Coventry · UKG33 · CV1 2LZ · United Kingdom
  • Delivery location · UKC · United Kingdom
  • Delivery location · UKD · United Kingdom
  • Delivery location · UKE · United Kingdom
  • Delivery location · UKF · United Kingdom
  • Delivery location · UKG · United Kingdom
  • Delivery location · UKH · United Kingdom
  • Delivery location · UKI · United Kingdom
  • Delivery location · UKJ · United Kingdom
  • Delivery location · UKK · United Kingdom
  • Delivery location · UKL · United Kingdom

Notice and amendment history

4 published notice versions reviewed by ProcuraAxis.

4 VERSIONS
  1. 013771-2026Preliminary market engagement notice on Find a Tender ·
  2. 014059-2026Preliminary market engagement notice on Find a Tender ·
  3. 035277-2026Preliminary market engagement notice on Find a Tender ·
  4. 059640-2026Tender notice on Find a Tender ·