The construction work being undertaken here is being led by Thames Water, and will improve management of storm flows by utilising existing storage in the sewers upstream of the pumping station. The work area includes a section within Shad Thames Pumping Station, as well as the stretch of Maguire Street between Shad Thames and Gainsford Street.
A new pipeline and manhole chamber have been constructed underneath Maguire Street to connect with the existing Thames Water local sewer network. This new section of pipework will take wastewater from Shad Thames to Beckton Sewage Treatment Works, via Greenwich Pumping Station, instead of discharging wastewater from the Combined Sewer Overflow at Butlers Wharf into the River Thames. This work will dramatically reduce this discharge quantity at the Butlers Wharf CSO from over thirty times a year to approximately four times a year.
The Southwark and Bermondsey storm relief sewer lies beneath Maguire Street, adjacent to Shad Thames Pumping Station. Inside the sewer is an eight foot (8’) penstock which controls the flow of water. This large structure will be replaced before the end of May 2019. A large crane will be used to lift the old penstock out of the sewer and subsequently replace it with the new one. Work can only take place within the penstock chamber at low tide times as the sewer is below river water level.