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Final 2014 WRMP

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Final 2014 WRMP Contents Executive Summary Executive Summary 2 Background, technical approach, objective and scope 4 Scale of our future challenge 6 Our 25-year plan to maintain the supply demand balance 10 Water trading and collaborative water resource planning 13 AMP6 Water Resources East Anglia project 14 Summary 14 PART ONE 1 Introduction 17 1.1 Purpose of the plan 17 1.2 Structure of the plan 18 2 Legislative and Policy Framework 20 2.1 Overview 20 2.2 Water for life 21 2.3 Water resource planning guideline 21 2.4 Meeting policy and regulatory expectations 22 3 Baseline Supply Demand Balance 25 3.1 Overview 25 3.2 Our recent achievements 27 3.3 Minimising the environmental impact of abstractions 27 3.3.1 Overview 27 3.3.2 Water Resources National Environment Programme (AMP6) 29 3.3.3 Water Framework Directive 32 3.3.4 Abstraction reform 35 3.3.5 Abstraction incentive measure 35 3.4 Baseline supply forecast 36 3.4.1 Overview 36 3.4.2 Deployable Output and levels of service 38 3.4.3 Impact of climate change on Deployable Output 40 3.5 Baseline demand forecast 42 3.5.1 Overview 42 3.5.2 Household demand 42 3.5.3 Non-household demand 43 3.5.4 Impact of climate change on demand 45 3.5.5 Leakage 45 3.5.6 Consumption forecast summary 47 3.6 Supply demand balances 48 3.7 Overview of our future challenges 54 3.7.1 Sustainability changes and reductions 55 3.7.2 Deteriorating raw water quality 59 3.7.3 Climate change 59 Final 2014 WRMP anglianwater.co.uk 4 Feasible Options 61 4.1 Option appraisal process 61 4.2 Feasible options 63 4.3 Trading options 72 4.4 Protecting the environment 73 4.4.1 Strategic Environmental Assessment & Habitats Regulations 73 4.4.2 Discounted schemes 75 4.4.3 Strategic options 77 5 Consultation Issues and Customer Views 78 5.1 Customer engagement 78 5.1.1 Love Every Drop 78 5.1.2 Key consultation issues 79 5.2 Enhanced levels of service 80 5.2.1 Background 80 5.2.2 Investment need 81 5.2.3 Customer views and willingness to pay 81 5.2.4 Investment alternatives 82 5.2.5 Cost benefit assessment 83 5.2.6 Impact of the investment on levels of service 84 5.2.7 Scheme Implementation 84 5.3 Extended demand management programme 85 5.3.1 Background 85 5.3.2 Customer views and willingness to pay 87 5.3.3 Cost benefit analysis 88 5.4 Deferred sustainability reduction schemes 89 5.4.1 Background 89 5.4.2 Delivery risks and issues 90 5.4.3 Risk mitigation 92 5.5 Compulsory metering 94 5.5.1 Background 94 5.5.2 Compulsory metering cost benefit 94 5.5.3 Discussion 97 6 Summary of the 25-year plan for maintaining the supply-demand balance 98 6.1 Overview 98 6.2 Environmental performance of the preferred options 101 6.3 AMP6 supply-side schemes 103 6.3.1 River Wensum 103 6.3.2 North Norfolk Coast 104 6.4 AMP6 demand management schemes 105 6.4.1 Leakage 105 6.4.2 Water efficiency 106 6.4.3 Metering 107 6.5 Greenhouse gas emissions 108 6.6 Implementation of the preferred plan 110 Contents 7 Testing the preferred plan 112 7.1 Overview 112 7.2 Climate change vulnerability 113 7.3 Effect of removing the preferred options ('Plan B') 113 7.4 Comparison with the cost effective plan 114 7.5 Scenario testing 118 8 Water Resources East Anglia (WREA) 127 8.1 Collaborative water resource planning overview 127 8.2 WREA project 129 8.3 AMP6 WREA project 134 9 Summary 136 9.1 Policy context for our 2014 WRMP 138 9.2 Baseline supply-demand balance 138 9.3 Options 139 9.4 Compulsory metering 140 9.5 Final planning solution 140 9.6 Scenario testing 141 9.7 AMP6 Water Resources East Anglia 142 PART TWO: RESOURCE ZONE SUMMARIES 10 Introduction 145 11 West Lincolnshire 147 11.1 Key Points 148 11.2 Resource Zone Description 148 11.3 Baseline Supply-Demand Balance 150 11.3.1 Baseline Supply Forecast Issues 151 11.3.2 Baseline Demand Forecast Issues 152 11.4 Scenario Testing 152 12 Central Lincolnshire 155 12.1 Key Points 156 12.2 Resource Zone Description 156 12.3 Baseline Supply-Demand Balance 158 12.3.1 Baseline Supply Forecast Issues 160 12.3.2 Baseline Demand Forecast Issues 160 12.4 Scenario Testing 160 13 East Lincolnshire 163 13.1 Key Points 164 13.2 Resource Zone Description 164 13.3 Baseline Supply-Demand Balance 166 13.3.1 Baseline Supply Forecast Issues 167 13.3.2 Baseline Demand Forecast Issues 168 13.4 Scenario Testing 168 Final 2014 WRMP anglianwater.co.uk 14 Fenland 171 14.1 Key Points 172 14.2 Resource Zone Description 172 14.3 Baseline Supply-Demand Balance 174 14.3.1 Baseline Supply Forecast Issues 175 14.3.2 Baseline Demand Forecast Issues 176 14.4 Feasible Options for maintaining the Supply-Demand Balance 176 14.4.1 Scheme Descriptions 176 14.4.2 Environmental Considerations 177 14.5 Preferred Plan 178 14.6 Scenario Testing 179 15 Hunstanton 183 15.1 Key Points 184 15.2 Resource Zone Description 184 15.3 Baseline Supply-Demand Balance 186 15.3.1 Baseline Supply Forecast Issues 187 15.3.2 Baseline Demand Forecast Issues 187 15.4 Feasible Options for maintaining the Supply-Demand Balance 187 15.4.1 Scheme Descriptions 188 15.4.2 Environmental Considerations 188 15.5 Preferred Plan 189 15.6 Scenario Testing 190 16 North Norfolk Coast 194 16.1 Key Points 195 16.2 Resource Zone Description 195 16.3 Baseline Supply-Demand Balance 197 16.3.1 Baseline Supply Forecast Issues 198 16.3.2 Baseline Demand Forecast Issues 199 16.4 Scenario Testing 199 17 Norwich and the Broads 202 17.1 Key Points 203 17.2 Resources Zone Description 203 17.3 Baseline Supply-Demand Balance 205 17.3.1 Baseline Supply Forecast Issues 206 17.3.2 Baseline Demand Forecast Issues 207 17.4 Feasible Options for maintaining the Supply-Demand Balance 207 17.4.1 Scheme Descriptions 208 17.4.2 Environmental Considerations 209 17.5 Preferred Plan 210 17.6 Scenario Testing 211 Contents 18 Norfolk Rural 216 18.1 Key Points 217 18.2 Resource Zone Description 217 18.3 Baseline Supply-Demand Balance 219 18.3.1 Baseline Supply Forecast Issues 220 18.3.2 Baseline Demand Forecast Issues 221 18.4 Scenario Testing 221 19 East Suffolk 224 19.1 Key Points 225 19.2 Resource Zone Description 225 19.3 Baseline Supply-Demand Balance 227 19.3.1 Baseline Supply Forecast Issues 228 19.3.2 Baseline Demand Forecast Issues 229 19.4 Feasible Options for maintaining the Supply-Demand Balance 229 19.4.1 Scheme Descriptions 229 19.4.2 Environmental Considerations 230 19.5 Preferred Plan 230 19.6 Scenario Testing 231 20 South Essex 236 20.1 Key Points 237 20.2 Resource Zone Description 237 20.3 Baseline Supply-Demand Balance 239 20.3.1 Baseline Supply Forecast Issues 240 20.3.2 Baseline Demand Forecast Issues 241 20.4 Feasible Options for Maintaining the Supply-Demand Balance 241 20.4.1 Scheme Descriptions 241 20.4.2 Environmental Considerations 242 20.5 Preferred Plan 243 20.6 Scenario Testing 244 21 Central Essex 248 21.1 Key Points 249 21.2 Resource Zone Description 249 21.3 Baseline Supply-Demand Balance 251 21.3.1 Baseline Supply Forecast Issues 252 21.3.2 Baseline Demand Forecast Issues 253 21.3.3 Baseline Supply Forecast Issues 253 21.4 Feasible Options for Maintaining the Supply-Demand Balance 253 21.4.1 Scheme Descriptions 253 21.4.2 Environmental Considerations 253 21.5 Preferred Plan 254 21.6 Scenario Testing 255 Final 2014 WRMP anglianwater.co.uk 22 Cheveley 259 22.1 Key Points 260 22.2 Resource Zone Description 260 22.3 Baseline Supply-Demand Balance 262 22.3.1 Baseline Supply Forecast Issues 264 22.3.2 Baseline Demand Forecast Issues 264 22.4 Feasible Options for Maintaining the Supply-Demand Balance 264 22.4.1 Scheme Descriptions 264 22.4.2 Environmental Considerations 265 22.5 Preferred Plan 265 22.6 Scenario Testing 266 23 Ely 270 23.1 Key Points 271 23.2 Resource Zone Description 271 23.3 Baseline Supply-Demand Balance 273 23.3.1 Basline Supply Forecast Issues 274 23.3.2 Baseline Demand Forecast Issues 275 23.4 Feasible Options for Maintaining the Supply-Demand Balance 275 23.4.1 Scheme Descriptions 275 23.4.2 Environmental Considerations 275 23.5 Preferred Plan 276 23.6 Scenario Testing 276 24 Newmarket 281 24.1 Key Points 282 24.2 Resource Zone Description 282 24.3 Baseline Supply-Demand Balance 284 24.3.1 Baseline Supply Forecast Issues 285 24.3.2 Baseline Demand Forecast Issues 286 24.4 Feasible Options for Maintaining the Supply-Demand Balance 286 24.4.1 Scheme Descriptions 286 24.4.2 Environmental Considerations 286 24.5 Preferred Plan 287 24.6 Scenario Testing 288 25 Sudbury 292 25.1 Key Points 293 25.2 Resource Zone Description 293 25.3 Baseline Supply-Demand Balance 295 25.3.1 Baseline Supply Forecast Issues 296 25.3.2 Baseline Demand Forecast Issues 296 25.4 Scenario Testing 297 Contents 26 West Suffolk 300 26.1 Key Points 301 26.2 Resource Zone Description 301 26.3 Baseline Supply-Demand Balance 303 26.3.1 Baseline Supply Forecast Issues 304 26.3.2 Baseline Demand Forecast Issues 305 26.4 Feasible Options for Maintaining the Supply-Demand Balance 305 26.4.1 Scheme Descriptions 306 26.4.2 Environmental Considerations 307 26.5 Preferred Plan 308 26.6 Scenario Testing 309 27 Ruthamford North 313 27.1 Key Points 314 27.2 Resource Zone Description 314 27.3 Baseline Supply-Demand Balance 316 27.3.1 Baseline Supply Forecast Issues 317 27.3.2 Baseline Demand Forecast Issues 318 27.4 Feasible Options for Maintaining the Supply-Demand Balance 318 27.4.1 Scheme Descriptions 319 27.4.2 Environmental Considerations 319 27.5 Preferred Plan 320 27.6 Scenario Testing 321 28 Ruthamford South 326 28.1 Key Points 327 28.2 Resource Zone Description 327 28.3 Baseline Supply-Demand Balance 329 28.3.1 Baseline Supply Forecast Issues 331 28.3.2 Baseline Demand Forecast Issues 332 28.4 Feasible Options
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