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5 Disposal of wastewater in London 5.1 Thames Water is the ‘sewerage undertaker’ for almost the whole of London (a small part of Havering is served by Anglian Water). It is responsible for collecting wastewater from homes and businesses, and treating it at one of the sewage treatment works listed below, before returning the treated water back to Table 5.1 London’s sewage treatment works Sewage treatment works the River Thames or one of its tributaries. Table 5.1 lists London’s wastewater treatment works and Figure 5.1 overleaf shows the network of sewers feeding into them. It also shows the areas served by the combined sewers and the separate foul and surface water sewers. Water course Catchment Consented flow * (m3/d) Beckton Tideway Waltham Forest, Barking & Dagenham, Brent, Camden, City of Westminster, City of London, Ealing, Hackney, Hammersmith & Fulham, Haringey. Islington, Kensington & Chelsea, Newham, Redbridge, Tower Hamlets, Crossness Tideway Bexley, Bromley, Croydon, Greenwich, Lambeth, Lewisham, Merton, Southwark, Sutton, Wandsworth Mogden Upper Tideway Barnet, Brent, Ealing, Harrow, Hillingdon, Hounslow, Richmond Upon Thames, Hertsmere, Slough, Three Rivers, Spelthorne, Windsor & Maidenhead, South Bucks Long Reach Tideway Bexley, Bromley, Croydon, Chelsham, Farleigh, Tatsfield & Titsey, Limpsfield, Sevenoaks, Dartford Riverside Tideway Havering, Barking & Dagenham, Redbridge, Stapleford & Abbots Deephams Leevia Salmon Brook Barnet, Brent, Enfield, Haringey, Waltham Forest, Waltham Abbey, Broxbourne, Northaw & Cuffley Hogsmill A Hogsmill River Kingston upon Thames, Sutton, Epsom & Ewell, Banstead Village, Nork, Tattenhams, Preston, Tadworth & Walton Hogsmill B Beverley Brook 20,000 Beddington Wandle Croydon, Sutton, Chipstead, Kingswood, Caterham, Warlingham, Whyteleafe and Woldingham 1,420,000 3,300 982,000 1,870 690,000 1,860 311,040 800 216,000 396 443,000 852 185,000 334 234,000 355 Population served (000s) The ‘consented flow’ is the maximum volume of wastewater in cubic metres per day (m 3 /d) that the sewage treatment work’s operating consent allows it to treat.
70 Figure 5.1 The London sewer system
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