DCWW2115 Service Reservoir Cleaning, Maintenance and Refurbishment CoP
- Buyer
- Dwr Cymru Cyfyngedig
- Value
- £25,500,000
- Closes
- 2 November 2026
- Where
- Cardiff, Wales
- Type
- Sets up a framework (suppliers apply to join)
In plain English
Welsh Water is hiring a contractor to clean, inspect, and do minor repairs on about 828 water storage tanks across Wales. This is a critical service to keep drinking water safe and meet regulations. The contract runs for 3 years (with option to extend to 8 years) and is worth £25.5 million for the initial term.
What the buyer wants
• Clean and disinfect potable water storage tanks using high-pressure water, soft brushes, and DWI-approved disinfectants or chemicals • Inspect service reservoirs during cleaning to identify problems • Carry out routine maintenance identified during inspections: concrete repairs, coatings, steel repairs, membrane fitting, ladder and pipework replacement, joint repairs, and emergency reactive repairs (but NOT structural modifications, embankment work, hydraulic modifications, or capacity changes)
Likely requirements
Our reading of the notice. Always check the tender documents.
This is a £25.5 million framework contract: most small businesses will be excluded unless they are part of a consortium, hold current DWI approvals, have substantial water industry experience, and can demonstrate they can mobilise teams across a large geographical area to service 828 tanks.
How to bid
This is a framework: the buyer picks a set of suppliers now and awards work to them over several years. If you are not on it when it is awarded, you usually cannot win work from it until it is re-tendered, so this is the window to bid.
More open tenders from Dwr Cymru Cyfyngedig
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