Oral question asked in the House of Lords, by Lord Berkeley (Labour). It was answered on Wednesday, 14 May 2014.

Thames Tideway Tunnel

Question: I am grateful to the Minister for that Answer. Will he confirm that the latest figure for how much it will cost all Thames Water’s customers—from Swindon to Witney, and Newbury to London—is about £70 or £80 per year extra for the next 50 years? Is that reasonable, given the fact that the tunnel may become redundant in 20 years because of the Government’s own Flood and Water Management Act and the requirement for sustainable urban drainage systems? Is not the best thing now to abandon the tunnel completely and save all this taxpayer and government money?

Answer: My Lords, of course not. Government estimates at 2011 prices were for a maximum bill impact range of between £70 and £80 per year. These figures remain valid as an upper bound and would take Thames Water customers’ sewerage bills to around the national average. The construction costs are currently out to tender with consortia of contractors. We also consulted last December on a competitive procurement approach for the financing costs, although no decision has yet been made.

Secondary information