Welsh Water opens DCWW2115 participation round for reservoir maintenance

Participation conditions come before two tender rounds

DCWW2115's published history records a single 6 October UK4 tender release and a 2 November 2026 at 23:59 UTC participation-condition deadline. The advertised process then moves to buyer selection and proposed ITT rounds. Qualification and bidding attachments are accessed through the DCC eSourcing portal and remain unreviewed. DWI's Drinking Water 2025 Wales report discusses service-reservoir ingress and storage resilience; its national inventory has a different period and scope from the 828-tank procurement estate.

Minor refurbishment has explicit engineering limits

The repair list includes concrete, steelwork, protective finishes, membranes, access ladders, pipework, joints and external earthworks. The exclusions remove structural tank modifications, surrounding embankments, changes to hydraulic performance or operating capacity, and work requiring a Reservoirs Act Panel Engineer. This distinction helps suppliers identify the relevant maintenance capability before obtaining the participation documents. Drain-down, water-quality controls and return-to-service arrangements still matter to operational delivery; the notice refers to DCC standard PNL 810, whose full requirements need the issued documents.