The Mayor's draft water strategy - london.gov.uk - Greater London ...

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Contents Mayor’s foreword ............................................................................................................. 5 Executive summary .......................................................................................................... 7 1 Introduction ................................................................................................................... 15 Arrangement of this document ................................................................................................ 15 Integrated water management ................................................................................................. 15 Governance of water ............................................................................................................... 17 Links with other plans and strategies ....................................................................................... 18 Towards sustainable development ........................................................................................... 21 Implementation and monitoring .............................................................................................. 23 2 Pressure on water resources ........................................................................................ 25 Introduction............................................................................................................................. 25 Water efficiency ....................................................................................................................... 35 New resources ......................................................................................................................... 36 The effects of climate change .................................................................................................. 38 3 Managing water use ..................................................................................................... 41 Leakage ................................................................................................................................... 41 Demand management ............................................................................................................. 46 Drinking water quality and bottled water ................................................................................ 57 4 Managing rainwater ..................................................................................................... 59 Rainwater use ......................................................................................................................... 60 Managing surface water runoff................................................................................................ 61 Risks of flooding...................................................................................................................... 62 Flooding from the surface water drains ................................................................................... 63 Flooding from groundwater ..................................................................................................... 64 Diffuse pollution ...................................................................................................................... 67 Water Framework Directive ...................................................................................................... 67 Rivers and canals ..................................................................................................................... 67
5 Disposal of wastewater in London ................................................................................ 69 Combined sewers ..................................................................................................................... 71 Flooding from sewers .............................................................................................................. 74 Misconnection of the foul sewer and surface drains ................................................................ 75 Fat, oil and grease ................................................................................................................... 76 Wastewater management and energy ...................................................................................... 77 Sludge management ................................................................................................................ 77 Odour nuisance ....................................................................................................................... 79 6 Paying for water services ............................................................................................. 81 Regulation of water services .................................................................................................... 83 Customers’ willingness to pay .................................................................................................. 85 Setting leakage targets ............................................................................................................ 85 Thames Tideway tunnel and treatment .................................................................................... 86 Charging for water ................................................................................................................... 87 Appendix ....................................................................................................................... 91
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70 Figure 5.1 The London sewer syst
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72 periods the sewers quickly fill
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