The Thames Tideway Tunnel (Tideway) is a new investment in the London sewer network, which will carry sewage and storm water discharges from the existing sewerage network. London's Thames Tideway improvements will significantly reduce polluting discharges in a typical year by about 37 million cubic metres, resulting in a healthier river for London's citizens and wildlife.

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6O6A2294 KRTST 140618.jpg
Sector
Status
Location
Ownership
Financial close
Design life

THE BACKGROUND

A 25km long, 7.2m diameter tunnel running up to 65 metres below the river Thames, replacing the Thames as a "sewer of last resort”. The Thames Tideway Tunnel will transport overflow sewage to a pumping station located at Abbey Mills (East London) before final treatment in Beckton Sewage Treatment Works.

The tunnel will be built under three separate construction contracts, each covering a distinct physical section of the network. Construction activities are expected to complete in 2024. The tunnel will cost £3.8bn to complete, and an additional £1.1bn has already been spent by Thames Water for preparatory works.

Facts

Length of sewer

25km

Diameter of new tunnel

7.2m

Waste treated when operational

37m cubic metres

New Public Space

3 acres

 

SDGs SUPPORTED

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Tideway.JPG

THE OUTCOME

Project highlights include: 

  • A yielding investment through both construction and operating periods
  • A fully index-linked revenue stream
  • An investment grade rated entity that is regulated by Ofwat


More details can be found on Tideway's website www.tideway.london