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Thames Tideway Tunnel

The construction of the Thames Tideway Tunnel Opens in a new window received ministerial approval in March 2007. The proposed scheme involves a single tunnel running from west London eastwards to the Beckton sewage treatment works. The tunnel aims to prevent raw sewage overflowing into the Thames from combined sewers between Hammersmith and Beckton and to ensure that the UK complies with the European Urban Waste Water Treatment Directive.

While borough perspectives vary on the need for a tunnel, one area of London-wide consensus has been the concern over the significant increased cost estimate of the scheme since the original announcement in 2007.

Our focus

London Thames water's toconsultations on this project.  Our consultation responses can be downloaded below.