Sydney Water Operational Audit 2011/2 - IPART - NSW Government

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Table of contents 1. Introduction ............................................................................................................................... 2 1.1 Sydney Water Corporation .............................................................................................. 2 1.2 Regulatory Structure........................................................................................................ 3 1.3 Operating Licence ........................................................................................................... 3 1.4 Audit Scope ..................................................................................................................... 3 1.5 Audit Methodology ........................................................................................................... 4 1.6 Audit Team ...................................................................................................................... 4 1.7 Compliance Assessment Grades ..................................................................................... 4 1.8 Structure of this Report .................................................................................................... 5 2. Water Quality – Part 2 ............................................................................................................... 6 2.1 Summary of Licence Part Requirements .......................................................................... 6 2.2 Factors Affecting Compliance .......................................................................................... 7 2.3 Water Quality – Compliance ............................................................................................ 7 2.4 Discussion ....................................................................................................................... 7 2.5 Discussion with Field Staff ............................................................................................... 9 2.6 Recommendations ........................................................................................................ 10 3. Infrastructure Performance – Part 3 ......................................................................................... 12 3.1 Summary of Licence Part Requirements ........................................................................ 12 3.2 Factors Affecting Compliance ........................................................................................ 13 3.3 Infrastructure – Compliance ........................................................................................... 13 3.4 Discussion ..................................................................................................................... 13 3.5 Discussion with Field Staff ............................................................................................. 15 3.6 Recommendations ........................................................................................................ 17 4. Water Conservation – Part 7 ................................................................................................... 19 4.1 Summary of Licence Part Requirements ........................................................................ 19 4.2 Factors Affecting Compliance ........................................................................................ 19 4.3 Water Conservation – Compliance................................................................................. 19 4.4 Discussion ..................................................................................................................... 19 4.5 Recommendations ........................................................................................................ 21 Table index Table 1 Auditable clauses for the 2011/12 Operational Audit of Sydney Water Corporation ................. 3 Table 2 Extract from Sydney Water's Corporate Risk Assessment ..................................................... 14 Table 3 Actual Out Turn Figures for Preventative Maintenance 2010/11 and 2011/12 from Sydney Water................................................................................................................ 73 Table 4 Extract from Corporate Risk Table ........................................................................................ 76 iv | GHD | Report for Independent Pricing and Regulatory Tribunal - Operational Audit of Sydney Water Corporation, 23/14602
Figure index Figure 1 Sydney Water's Areas of Operation (Source: Sydney Water Corporation) .............................. 2 Figure 2 Structure and Responsibility of the Audit Team ...................................................................... 4 Figure 3 Sydney Water Asset Management Framework .................................................................... 69 Figure 4 Extract of Table 16 Water Main Asset Management Plan .................................................... 73 Figure 5. Real Losses 1999/00 - 2011/12 .......................................................................................... 81 Figure 6 Leakage Management Strategy and Outcomes ................................................................... 86 Figure 7 Breakdown of Leakage ........................................................................................................ 88 Appendices Appendix A – Glossary and Dictionary Appendix B – Water Quality Detailed Audit Findings (Part 2, Section 2.1) Appendix C – Water Quality Detailed Audit Findings (Part 2, Section 2.2) Appendix D – Water Quality Detailed Audit Findings (Part 2, Section 2.3) Appendix E – Infrastructure Performance Detailed Audit Findings (Part 3, Section 3.1.1) Appendix F – Water Conservation Detailed Audit Findings (Part 7, Section 7.2) Appendix G – Audit Methodology Appendix H – Audit Scope Appendix I – Attendance at Audit Interviews Appendix J – SWC Document Received by GHD GHD | Report for Independent Pricing and Regulatory Tribunal - Operational Audit of Sydney Water Corporation, 23/14602 | v
Page 1: Independent Pricing and Regulatory
Page 4 and 5: © Independent Pricing and Regulato
Page 7 and 8: Executive Summary Executive Summary
Page 9 and 10: 1 Introduction and scope 1 Introduc
Page 11 and 12: 1 Introduction and scope Under our
Page 13 and 14: 2 Overview of audit findings and re
Page 15 and 16: 2 Overview of audit findings and re
Page 17 and 18: 3 Progress on 2010/11 audit recomme
Page 19: A Operational Audit Report 2011/12
Page 23 and 24: Executive summary Introduction GHD
Page 25: Compliance Against Audited Licence
Page 30 and 31: 1. Introduction 1.1 Sydney Water Co
Page 32 and 33: 1.5 Audit Methodology The operation
Page 34 and 35: 2. Water Quality - Part 2 2.1 Summa
Page 36 and 37: Information provided by Sydney Wate
Page 38 and 39: In particular, routine verification
Page 40 and 41: 3. Infrastructure Performance - Par
Page 42 and 43: Unexpected claims for additional wo
Page 44 and 45: maintenance request developed. This
Page 46 and 47: 3.6.2 Opportunities for Improvement
Page 48 and 49: Up until the two most recent years,
Page 50 and 51: OFI 7.4 IPART should note that any
Page 52 and 53: Appendix A - Glossary and Dictionar
Page 54 and 55: Abbreviation/Acronym ISO IT JOG kL
Page 56 and 57: Clause Requirement Grade Reason a S
Page 58 and 59: Clause Requirement Grade Reason Aud
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Clause Requirement Grade Reason Aud
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Appendix C - Water Quality Detailed
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Clause Requirement Grade and Reason
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Appendix D - Water Quality Detailed
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Appendix E - Infrastructure Perform
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Appendix F - Water Conservation Det
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Appendix G - Audit Methodology GHD
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Audit Methodology The methodology a
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Licence Clause Operating Licence Ob
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Drinking Water Quality Interview Pe
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Appendix J - SWC Document Received
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Document Reference Number Document
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GHD 16 Marcus Clarke St Canberra AC
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B Sydney Water’s Statement of Com
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Operating Licence 2010-2015 Complia
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1 Introduction This report has been
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In 2011-12, 572 properties experien
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2.2.1 Water continuity: unplanned i
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2.2.3 Water continuity: historical
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2.3 Sewage Overflow Standard (SPS 4
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2.3.3 Sewage overflows: historical
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3.1 Response times for Priorities 6
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Water use per capita per day 460 43
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4.1.1 Calculating water leakage The
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Table of Contents Introduction Tabl
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Table E.1 - NWI Water Resources and
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NWI W18 Total sewage collected The
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Table E.2 - IPART Service Quality a
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Table E.3 - NWI Customer Indicators
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Sydney Water continues to undertake
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Table E.4 - IPART Customer Service
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Ref. Indicator 2007-08 2008-09 2009
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Table E.7 - NWI Pricing Indicators
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Ref. Indicator 2007-08 2008-09 2009
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Water Efficiency Report
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Contents At a glance - 2011-12 1 1
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8 Water use forecast 30 8.1 2010-15
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As noted in last year’s Water Eff
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Recycled water In 2011-12, Sydney W
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person per day (LPD). In 2011-12, w
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Box A: Case study Working with cust
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A case study of a customer working
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2.3.3 Educational tours Sydney Wate
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3 Leak management in 2011-12 Best p
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3.5 Improving flow metering Flow me
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4.3 Water recycling projects Sydney
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5 Research, analysis and support in
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5.4 Water Conservation Program Impl
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5.11 Recycling research projects In
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Figure 11 Sydney Water’s Strategi
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lecturers, and local and state gove
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8 Water use forecast Our current de
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Appendix 2 Correcting for weather W
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Appendix 4 Estimating leakage Sydne
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Appendix 6 Savings achieved between
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Program 99-00 00-01 01-02 02-03 03-
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Appendix 8 List of acronyms and uni
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Table of Contents 1 Introduction 3
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(c) If either Sydney Water or a lic
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2.3 Delays by consent authorities N
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Distribution list Controlled copy D
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Contents 1. Introduction ..........
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Water quality - characteristics not
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Table 1: Exception summary for wate
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2.3 Performance for key characteris
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3.1.1 Evaluation of results on an e
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Delivery System No. of exceptions/t
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4. Water quality: other characteris
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Table 6: Summary of exceptions for
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Table 8: Summary of exceptions for
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5. Water Quality: Summary of NSW He
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Date of notification Event/incident
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Date of notification Event/incident
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Orchard Hills 2004 Guideline Health
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Prospect North 2004 Guideline Healt
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Ryde 2004 Guideline Health Value Qu
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Warragamba 2004 Guideline Health Va
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Macarthur 2004 Guideline Health Val
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Woronora 2004 Guideline Health Valu
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SWC Summary 2004 Guideline Health V
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Table 13: Aesthetic guideline value
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Delivery System : Prospect East 200
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Delivery System : Nepean 2004 Guide
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Delivery System : Cascades 2004 Gui
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Orchard Hills 2004 Guideline Aesthe
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Prospect North 2004 Guideline Aesth
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Ryde 2004 Guideline Aesthetic Value
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Warragamba 2004 Guideline Aesthetic
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Macarthur 2004 Guideline Aesthetic
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Woronora 2004 Guideline Aesthetic V
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SWC Summary 2004 Guideline Aestheti
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Cryptosporidium - (DAPI CONFIRMED)
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Giardia - (DAPI CONFIRMED) Quarter
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Table 16: Number of exceptions for
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Table 18: Chlorine performance by d
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Quarterly Recycled Water Quality Mo
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DOCUMENT STATUS This quarterly repo
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1. Introduction In Sydney Water’s
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Table 1: Exception summary for recy
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Table 2: Evaluation of results on e
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Sydney Water Operational Audit 2011/2 - IPART - NSW Government

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