✓Tender information last checkedLast checked 6 Oct 2026, 16:27.
Opportunity overview
Overview And Objectives
DCC intends to award a Framework Agreement for Service Reservoir Cleaning, Maintenance and Refurbishment services. It is a business-critical service required to:
• maintain the cleanliness, integrity and operational condition of DCC’s potable water storage assets;
• support the safe and timely return of service reservoirs to operation following planned cleaning, inspection and minor remedial works; and
• support compliance with Drinking Water Inspectorate (DWI) requirements, DCC’s internal standards and applicable water quality legislation.
The Framework will be used to provide cleaning and maintenance for potable water tanks across DCC’s operational area. There are approximately 828 tanks within DCC’s estate that require routine cleaning and inspection in accordance with PNL 810 (DCC’s internal standard for drain downs and cleaning of service reservoirs) to meet Drinking Water Inspectorate (DWI) regulations.
Tanks include below ground and above ground steel or concrete tanks as well as a small number of water towers however most tanks are square, underground concrete structures.
Ensuring a clean and consistent water supply is core to DCC services and is linked directly to corporate key performance indicators.
The proposed contract term is 3 years, with the option to extend for a further 5 years (2 + 2 + 1 years). The estimated value of the framework for the initial three-year term is £25.5 million based on estimated annual expenditure of approximately £8.5 million. The value across the maximum term of 8 years is £68m.
Scope
The scope includes the following elements:
Cleaning
This includes the cleaning and disinfecting of the tanks normally with the use of high-pressure water or soft brush as appropriate and DWI Approved disinfectant. In some instances, it may be a requirement to carry out chemical cleaning with the use of a DWI approved chemical.
The tasks to be carried out will include:
• Cleaning and disinfection of potable water storage tanks using appropriate methods and DWI-approved products
• Inspection of service reservoirs as part of cleaning activities
Maintenance
Maintenance activities are usually identified at the time of cleaning by the Supplier and instructed by DCC to enable the tanks to be safely returned to service. These tend to be internal and external works for concrete repairs and coatings, internal and external steel repairs, membrane fitting and repairs, replacement of ladders and pipework, joint repairs, external earthworks repairs and joint repairs. Emergency reactive repairs to concrete/ pipework / liner etc. may also be required on occasion. These works will exclude any work that involves significant engineering difficulties such as:
• Any structural modifications to the tank(s);
• Any works on the embankments surrounding the tank(s);
• Any modifications to the pipework that can influence the hydraulic performance of the tank(s);
• Any works that alters the operating capacity of the tanks;
• Any works that constitutes the appointment of a Panel Engineer under the Reservoirs Act.
The tasks to be carried out will include:
• Minor planned and reactive remedial works, including concrete and steel repairs, coatings, membranes, ladders, pipework, joints and external earthworks.
• Emergency reactive repairs where required.
• Activities necessary to support the safe return of reservoirs to service.
The Framework Agreement will be procured as a single Lot, with two Suppliers appointed to the Framework.
Classification
CPV50514100 — Repair and maintenance services of tanks
CPV50800000 — Miscellaneous repair and maintenance services
CPV90913000 — Tank and reservoir cleaning services
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
DCWW2115
Status
active
Procurement Method
open
Procurement Method Details
Competitive flexible procedure
Main Procurement Category
services
Above Threshold
Yes
How to submit
Participation instructions — how to express an interest in this opportunity.
1) Register your organisation on the DCC eSourcing Portal (this is only required once so please check whether there is an existing account registered for your organisation — multiple users can be added as required);
2) Express an interest in the opportunity:
— log in to the portal with your username and password,
— click the 'PQQs/ ITTs Open to all Suppliers' link,
— click on the relevant PQQ/ ITT to access the content,
— click the 'Express Interest' button at the top of the page — this will move the PQQ/ ITT into your 'My PQQs/ITTs' page (this is a secure area reserved for your projects only),
— you can now access any attachments by clicking 'Attachments' in the 'PQQ/ ITT details' box.
3) Responding to the Opportunity
— click 'My Response' under 'PQQ/ ITT details'. You can choose to 'Create response' or 'Decline to Respond',
— you can now use the messaging function to communicate with the buyer and seek any clarification,
— note the deadline for completion and follow the onscreen instructions to complete your response — there may be a mixture of online and offline actions for you to perform,
— you must then submit your reply using the 'Submit Response' button at the top of the page. Please Note the following
— you must download the documents yourself after you have expressed interest, they will not be sent to you,
— expressions of Interest will ONLY be accepted through the eSourcing Portal
— all documentation must be returned electronically via the eSourcing Portal,
— if you require any further assistance please consult the online help, or contact the eSourcing helpdesk using the contract information provided on the home page.
Participation instructions — how to express an interest in this opportunity.
1) Register your organisation on the DCC eSourcing Portal (this is only required once so please check whether there is an existing account registered for your organisation — multiple users can be added as required);
2) Express an interest in the opportunity:
— log in to the portal with your username and password,
— click the 'PQQs/ ITTs Open to all Suppliers' link,
— click on the relevant PQQ/ ITT to access the content,
— click the 'Express Interest' button at the top of the page — this will move the PQQ/ ITT into your 'My PQQs/ITTs' page (this is a secure area reserved for your projects only),
— you can now access any attachments by clicking 'Attachments' in the 'PQQ/ ITT details' box.
3) Responding to the Opportunity
— click 'My Response' under 'PQQ/ ITT details'. You can choose to 'Create response' or 'Decline to Respond',
— you can now use the messaging function to communicate with the buyer and seek any clarification,
— note the deadline for completion and follow the onscreen instructions to complete your response — there may be a mixture of online and offline actions for you to perform,
— you must then submit your reply using the 'Submit Response' button at the top of the page. Please Note the following
— you must download the documents yourself after you have expressed interest, they will not be sent to you,
— expressions of Interest will ONLY be accepted through the eSourcing Portal
— all documentation must be returned electronically via the eSourcing Portal,
— if you require any further assistance please consult the online help, or contact the eSourcing helpdesk using the contract information provided on the home page.
https://dwrcymru-welshwater.bravosolution.co.uk
Published risks
Documents will be provided free of charge via the DCC eSourcing Portal: https://dwrcymru-welshwater.bravosolution.co.uk
The procurement will be conducted using the Competitive Flexible Procedure under section 20 of the Procurement Act 2023, comprising a Conditions of Participation stage followed by two ITT rounds. Suppliers meeting the proportionate Conditions of Participation will progress to ITT Round 1, with the Authority retaining the right to limit supplier numbers through the published selection methodology. Suppliers progressing to the ITT stage will be expected to facilitate a site visit. ITT Round 1 may include clarification and negotiation, followed by an intermediate assessment and down-selection of suppliers. The Authority may then undertake further negotiation with shortlisted suppliers and, where expressly provided for in the procurement documents, refine the award criteria and their relative importance in accordance with section 24, before issuing ITT Round 2 and requesting final tenders. Final tenders will be evaluated against the final published award criteria and assessment methodology, with the Contract awarded to the supplier submitting the Most Advantageous Tender (MAT) under section 19.
Special regime
utilities
Techniques
Has Framework Agreement
Yes
Framework Agreement
Method
withAndWithoutReopeningCompetition
Type
closed
Description
Under PA23, the framework will set out a clear and objective call-off mechanism in advance. Routine work will be allocated between the two appointed suppliers using predetermined criteria, including:
• geographic coverage
• capacity
• workload
• supplier performance
Higher-value or more complex requirements may be subject to a competitive selection process between the appointed Suppliers (mini-competition), with the applicable award criteria set out in the Framework Agreement documentation.
DCC will also retain the ability to allocate work to the alternative supplier where the preferred supplier cannot meet the required capacity or service levels. Supplier performance will be reviewed periodically and may inform future work allocation where this methodology and the relevant performance measures are clearly established in the Framework.
Submission terms
Electronic Submission Policy
allowed
Languages
en
Tender Period
Ends
2 Nov 2026, 23:59
Expected award period
Ends
1 Apr 2027, 23:59
Lots and requirements
Entry 1
Id
1
Status
active
Has Renewal
Yes
Value
Including VAT
30,600,000
Amount
25,500,000
Currency
GBP
Award criteria
Criteria
Criterion 1
Type
quality
Name
Technical
Numbers
Entry 1
Number
40
Weight
percentageExact
Criterion 2
Type
cost
Name
Commercial
Numbers
Entry 1
Number
60
Weight
percentageExact
Suitability
Sme
Yes
Contract period
Starts
15 May 2027, 00:00
Ends
15 May 2030, 23:59
Max Extent Date
15 May 2035, 23:59
Renewal
Description
The contract can be extended for a maximum of 5 years (2 + 2 + 1 years), based on supplier performance and operational circumstances.
1 published notice version reviewed by ProcuraAxis.
1 VERSION
1
094342-2026Tender notice on Find a Tender ·
PROCURAAXIS ANALYSIS
ProcuraAxis Analysis
Our approved analysis of the opportunity appears below the official tender information.
ANALYSIS PREVIEW
Opportunity intelligence at a glance
Dwr Cymru Cyfyngedig is seeking a two-supplier, single-lot framework for cleaning, disinfecting, inspecting, maintaining and undertaking minor reactive repairs to potable-water service reservoirs. The estate comprises about 828 tanks, including predominantly underground concrete tanks, plus steel tanks and some water towers.
Who this may suit
Suitable for specialist water-reservoir cleaning and maintenance contractors able to clean and disinfect potable-water tanks, inspect assets, deliver minor concrete, steel, coating, membrane, ladder, pipework and joint repairs, and respond to occasional emergencies.
Key points identified
Cleaning and disinfection capabilityClean and disinfect potable-water storage tanks using appropriate methods, including high-pressure water or soft brush where appropriate.Evidence: “Cleaning and disinfection of potable water storage tanks using appropriate methods and DWI-approved products”.
Reservoir inspectionInspect service reservoirs as part of cleaning activities.Evidence: “Inspection of service reservoirs as part of cleaning activities”.
Maintenance and remedial works capabilityDeliver minor planned and reactive works including concrete and steel repairs, coatings, membranes, ladders, pipework, joints and external earthworks.Evidence: Scope lists “Minor planned and reactive remedial works, including concrete and steel repairs, coatings, membranes, ladders, pipework, joints and external earthworks.”
94% approved-analysis confidence10 supplier criteria identified4 risks or unknowns
ProcuraAxis structures information found in published procurement records, checks the result for consistency and publishes only approved analysis. Confidence describes the completeness and consistency of the available source information; it is not a guarantee of eligibility or contract award.
Dwr Cymru Cyfyngedig is seeking a two-supplier, single-lot framework for cleaning, disinfecting, inspecting, maintaining and undertaking minor reactive repairs to potable-water service reservoirs. The estate comprises about 828 tanks, including predominantly underground concrete tanks, plus steel tanks and some water towers.
Who this may suit
Suitable for specialist water-reservoir cleaning and maintenance contractors able to clean and disinfect potable-water tanks, inspect assets, deliver minor concrete, steel, coating, membrane, ladder, pipework and joint repairs, and respond to occasional emergencies.
Key deliverables
Cleaning, disinfection and inspection of potable-water storage tanks
Use of appropriate methods and DWI-approved disinfectants or, where required, DWI-approved chemicals
Minor planned and reactive reservoir remedial works
Occasional emergency repairs
Support for safe return of reservoirs to service
SUPPLIER REQUIREMENTS
10 criteria identified
Drinking Water Inspectorate (DWI) approval
90% confidence
Mandatory · 1
View supporting evidence
Cleaning and disinfecting is to be undertaken using “DWI Approved disinfectant”; in some instances chemical cleaning may require “a DWI approved chemical”.
Cleaning and disinfection capability
96% confidence
Clean and disinfect potable-water storage tanks using appropriate methods, including high-pressure water or soft brush where appropriate.
View supporting evidence
“Cleaning and disinfection of potable water storage tanks using appropriate methods and DWI-approved products”.
Reservoir inspection
97% confidence
Inspect service reservoirs as part of cleaning activities.
View supporting evidence
“Inspection of service reservoirs as part of cleaning activities”.
Maintenance and remedial works capability
98% confidence
Deliver minor planned and reactive works including concrete and steel repairs, coatings, membranes, ladders, pipework, joints and external earthworks.
View supporting evidence
Scope lists “Minor planned and reactive remedial works, including concrete and steel repairs, coatings, membranes, ladders, pipework, joints and external earthworks.”
Emergency repair capability
96% confidence
Provide emergency reactive repairs when required.
View supporting evidence
“Emergency reactive repairs where required.”
Internal standard compliance
94% confidence
Routine cleaning and inspection must be undertaken in accordance with PNL 810, DCC’s internal standard for drain downs and cleaning of service reservoirs.
View supporting evidence
“approximately 828 tanks... require routine cleaning and inspection in accordance with PNL 810”.
Excluded works
97% confidence
Do not undertake structural tank modifications, embankment works, hydraulic-performance-affecting pipework modifications, capacity-altering works, or work constituting appointment of a Panel Engineer under the Reservoirs Act.
View supporting evidence
The notice expressly excludes these categories of significant engineering work.
Supplier eligibility conditions
99% confidence
Unknown
View supporting evidence
No financial, technical-selection, insurance, location, company-size or other eligibility criteria are stated in the supplied notice data.
SME suitability
99% confidence
Unknown
View supporting evidence
The supplied opportunity record does not state whether it is suitable for SMEs.
VCSE suitability
99% confidence
Unknown
View supporting evidence
The supplied opportunity record does not state whether it is suitable for VCSEs.
COMMERCIAL AND DELIVERY
Contract intelligence
Commercial
Framework estimated value, initial term
98% confidence
£25.5 million
View supporting evidence
“The estimated value of the framework for the initial three-year term is £25.5 million”.
Estimated annual expenditure
96% confidence
Approximately £8.5 million
View supporting evidence
“based on estimated annual expenditure of approximately £8.5 million”.
Maximum framework value
98% confidence
£68 million across a maximum eight-year term
View supporting evidence
“The value across the maximum term of 8 years is £68m.”
Contract pricing and payment terms
99% confidence
Unknown
View supporting evidence
No pricing mechanism, payment terms or call-off terms are provided in the supplied data.
Delivery
Delivery area
92% confidence
DCC operational area; specific service locations unknown
View supporting evidence
“The Framework will be used to provide cleaning and maintenance for potable water tanks across DCC’s operational area.” The supplied location is identified only as buyer location, Cardiff.
Asset estate
97% confidence
Approximately 828 tanks, comprising below- and above-ground steel or concrete tanks and a small number of water towers; most are square underground concrete structures.
View supporting evidence
Asset description in the notice.
Framework term
98% confidence
Three years, with an option to extend by up to five years (2 + 2 + 1), for a maximum of eight years.
View supporting evidence
“The proposed contract term is 3 years, with the option to extend for a further 5 years (2 + 2 + 1 years).”
Start date
99% confidence
Unknown
View supporting evidence
No contract start date is supplied.
PROCEDURE
How to respond
Opportunity status
99% confidence
Open
View supporting evidence
The supplied record states display status “open” and source status “active”.
Procedure
99% confidence
Competitive flexible procedure
View supporting evidence
Procurement method is open; procurement method details state “Competitive flexible procedure”.
Lot structure
99% confidence
Single lot; two suppliers will be appointed to the framework.
View supporting evidence
“The Framework Agreement will be procured as a single Lot, with two Suppliers appointed to the Framework.”
Works support potable-water quality compliance and safe reservoir return to service; failure could affect a business-critical water supply service.
View supporting evidence
The notice links the service to DWI requirements, water quality legislation, operational condition and safe return of reservoirs to operation.
Emergency response demand
94% confidence
Emergency reactive repairs may be required occasionally; response arrangements are not stated.
View supporting evidence
“Emergency reactive repairs to concrete/ pipework / liner etc. may also be required on occasion.”
Restricted scope boundary
95% confidence
The contractor must manage interfaces where defects exceed minor remedial works, as significant engineering and specified Reservoirs Act-related works are excluded.
View supporting evidence
The notice lists structural, embankment, hydraulic, capacity and Panel Engineer-related exclusions.
Framework appointment risk
93% confidence
Appointment to the two-supplier framework does not state guaranteed work volumes or call-off allocation.
View supporting evidence
The notice confirms two suppliers will be appointed but provides no minimum-volume or allocation commitment.
ProcuraAxis analysis supplements, but does not replace, the original notice and tender documents. Always verify eligibility, deadlines and commercial terms with the issuing authority.
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