The project covers a huge package of civils and MEICA works to boost supply resilience and modernise ageing assets at the busy operational site in the Lea Valley.

Key elements include a new 700 Ml/day high lift pumping station, recirculation and run-to-waste systems for 32 slow sand filters, and upgrades to contact tanks and the existing power supply and distribution systems for the site.

Thames is also developing options for a cryptosporidium treatment system and a dechlorination facility, which may be added to the scope.

The new pumping station will be built within the footprint of an existing slow sand filter. It will link into the Thames Water Ring Main.

Acciona is now tasked with delivering all design, procurement, construction, commissioning and decommissioning works under the negotiated procedure.

The scheme forms part of Thames Water’s conditional allowance programme to future-proof London’s drinking water infrastructure.