The Mersey Estuary pollution alleviation scheme : Liverpool interceptor sewers

This paper describes the planning, design and construction of the principal Liverpool elements of the Mersey Estuary Pollution Alleviation Scheme. It excludes the primary wastewater treatment works at Sandon Dock which were separately designed and managed by North West Water (NWW). The planning of the project was originally undertaken by Liverpool City Engineer as agent for NWW, and includes major tunnels, combined sewer overflows/storm storage chambers, outfall penstock chambers, and a reactive real time control system. The design and construction covers a period of major management and technological change within the water industry.