Open tender · United Kingdom · Services

DCWW2115 Service Reservoir Cleaning, Maintenance and Refurbishment CoP

Dwr Cymru Cyfyngedig

Dwr Cymru Cyfyngedig in the United Kingdom is inviting bids for “DCWW2115 Service Reservoir Cleaning, Maintenance and Refurbishment CoP”. Bids close on 2 November 2026, 23:59 GMT; the estimated value is £25.5 million (framework maximum). askTender lists every requirement to qualify and checks whether your company meets them.

The tender in brief

Cleaning and maintenance of about 828 drinking-water tanks across Wales, for tank cleaning and repair contractors

Dwr Cymru Cyfyngedig (Welsh Water) is setting up a framework agreement for cleaning, inspection and minor refurbishment of potable water storage tanks across its operational area. The estate has approximately 828 tanks, mostly square underground concrete structures, with some steel or concrete tanks and a small number of water towers. Two suppliers will be appointed to a single lot. The initial term is 3 years, with an option to extend for a further 5 years.

Key facts

Framework maximum
£25.5 million
Contract period
3 years, with an option to extend for a further 5 years (2 + 2 + 1 years)
How bids are judged
Commercial cost 60%, technical quality 40%
Published
06 Oct 2026

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Public data: Contains public sector information licensed under the Open Government Licence v3.0. Source: Find a Tender Service (Cabinet Office). · Sources & licences