The Middlegate Reservoir scheme “is a key part of that investment”, it added. Together, the sets will enable treated water arriving from East Lincolnshire to be conditioned before entering the strategic pipeline network. Loading…“Prefabricated concrete elements are being incorporated into the reservoir construction, helping improve consistency and reduce onsite activity. “Middlegate is being developed as part of Anglian Water’s Digital Twin Programme, creating a digital replica of the completed asset that will support future operation and maintenance. Anglian Water’s @one Alliance comprises a mix of specialists from Anglian Water, Balfour Beatty, Barhale, Binnies, Mott MacDonald Bentley, MWH Treatment, Skanska and Sweco.