Tideway is upgrading London's current sewerage system to cope with the demands of the city well into the 22nd century.

After years of study, construction work for the new 25 kilometre interception, storage and transfer tunnel running up to 66 metres below the river, will be  known as the Thames Tideway Tunnel

Starting in west London, the main tunnel generally follows the route of the River Thames to Limehouse, where it then continues north-east to Abbey Mills Pumping Station near Stratford. There it will be connected to the Lee Tunnel, which will transfer the sewage to Beckton Sewage Treatment Works.

Overflows of untreated sewage into the tidal River Thames add up to tens of millions of tonnes every year. This is unacceptable and the Thames Tideway Tunnel will clean up one of the world’s iconic rivers.


The Carnwath Road Riverside site is the main drive for the west section of the main tunnel being delivered by the BAM Nuttall, Morgan Sindall and Balfour Beatty Joint Venture. It is from here that the tunnel boring machine named Rachel that will drive 7km to Acton will be lowered. Some of the activities being carried out on site are excavating the shaft, concrete spray lining, constructing foundation for muck bins and river wall dredging

Address Carnwath Road Riverside,
27 Carnwath Road
Parking available no
Length of Visit 2 Hours
Maximum Group Size 20
Register by March 14, 2018
Disabled Access yes

Disable access is via the main enterance

Child Restrictions no

Vic Chetty

08000 30 80 80

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The next Open Doors will take place in 2019.

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