Draft Water AMP 2018-2028 Prepared by the Drainage and Water Unit Infrastructure Group PLAN STATUS/DOCUMENT CONTROL Signature: Document Approved by: Position Title: Unit: Drainage and Water Version: Document Release State: Internal TDC Use Information: Writing Team: Grant Hall, Drainage and Water Unit Manager Judy Blakemore, Water Services Operations Engineer Gerard Cody, Water Services Reticulation Engineer Selwyn Chang, Water Services Projects Engineer Liberty Guinto, Water Services Strategy Officer Revision History: Version Date Author Section Description Contributions Function Position Water AMP 2018-28 Document # 1124049 1 TABLE OF CONTENTS Plan Status/Document Control ........................................................................................................................ 1 Table of Contents ................................................................................................................................................... 2 List of Tables ............................................................................................................................................................ 8 List of Figures .......................................................................................................................................................... 9 Executive Summary ........................................................................................................................................... 12 PART A – OVERVIEW AND GENERAL ACTIVITY MANAGEMENT .................................................. 20 A1 Introduction ............................................................................................................................................... 21 A1.1 About This Plan ...................................................................................................................................... 21 A1.2 Objective of the Plan ............................................................................................................................. 24 A1.3 Relationship with Other Plans, Policies and Strategies ......................................................... 24 A1.4 Relationship with Legislation ........................................................................................................... 27 A1.5 Key Relationships .................................................................................................................................. 29 A2 Strategic Direction ................................................................................................................................... 31 A2.1 Vision, Outcomes and Priorities for Timaru District .............................................................. 31 A2.2 Activity Contribution to District Vision, Outcomes and Priorities .................................... 33 A3 Key Challenges in the Next 10 Years ................................................................................................ 34 A4 Planning Assumptions ........................................................................................................................... 36 A5 The Activity................................................................................................................................................. 45 A5.1 Activity Description .............................................................................................................................. 45 A5.2 Activity Rationale .................................................................................................................................. 46 A5.3 Significant Effects of this Activity ................................................................................................... 46 A5.4 Activity Contribution to Sustainable Development ................................................................. 47 A6 Levels of Service ....................................................................................................................................... 48 A6.1 Key Service Drivers............................................................................................................................... 48 A6.2 Customer Research and Expectations .......................................................................................... 49 A6.3 Levels of Service ..................................................................................................................................... 50 A6.4 Service Delivery ..................................................................................................................................... 61 A7 Demand Forecasting and Management .......................................................................................... 64 A7.1 Assessment of Demand Drivers ....................................................................................................... 64 A7.2 Forecasting Future Demand ............................................................................................................. 68 A7.3 Managing Demand ................................................................................................................................ 69 A7.4 Demand Management Strategy ....................................................................................................... 72 A8 Asset Knowledge ...................................................................................................................................... 72 A8.1 What assets do we have ...................................................................................................................... 72 A8.2 Asset Condition and Performance .................................................................................................. 78 A8.3 Data Confidence ..................................................................................................................................... 81 A9 Asset Life Cycle Management .............................................................................................................. 82 A9.1 Operations and Maintenance Planning ........................................................................................ 83 Water AMP 2018-28 Document # 1124049 2 A9.2 Capital Works Planning....................................................................................................................... 85 A9.2.1 Asset Renewal Strategy ...................................................................................................................... 86 A9.2.2 Asset Upgrading/Development Strategy .................................................................................... 89 A9.2.3 Asset Disposal Strategy ...................................................................................................................... 89 A9.3 Risk Management .................................................................................................................................. 91 A10 Asset Management Information Systems................................................................................ 100 A11 Financial Planning ............................................................................................................................ 105 A11.1 TDC’s Financial Strategy ................................................................................................................... 105 A11.2 Revenue and Financing Policy ....................................................................................................... 107 A11.3 Financial Contributions Policy ....................................................................................................... 108 A11.4 Asset Valuation ..................................................................................................................................... 108 A11.5 Financial Projections 2018-2028 .................................................................................................. 110 A11.6 Key Financial Assumptions, Forecast Reliability and Confidence ................................... 110 A12 Improvement Plan ............................................................................................................................ 111 PART B – SCHEME AMPs .............................................................................................................................. 119 B1 URBAN WATER SUPPLY SCHEME AMPs ..................................................................................... 120 B2 Geraldine Water Supply ..................................................................................................................... 121 B2.1 Scheme Overview ................................................................................................................................ 121 B2.2 Scheme Management ......................................................................................................................... 124 B2.2.1 Asset Summary .................................................................................................................................... 124 B2.2.2 Asset Condition and Performance................................................................................................ 126 B2.2.3 Asset Life Cycle Management ......................................................................................................... 128 B2.3 Risk Management ........................................................................................................................................