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

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1.5 Audit Methodology The operational audit adopted a methodology consistent with ISO 14011 ‘Guidelines for Environmental Auditing’. This guideline provides a systematic approach to defining the requirements of the audit, planning, interpreting Licence Conditions, collecting audit evidence, objectively assessing the evidence, and reporting in a clear and accurate manner. It also ensures that the audit has been conducted in accordance with an established and recognised audit protocol. The audit methodology applied is discussed further at Appendix G. 1.6 Audit Team The audit team consisted of IPART accredited auditors as shown in Figure 2. Figure 2 Structure and Responsibility of the Audit Team 1.7 Compliance Assessment Grades The table below describes the ratings used to assess compliance in this audit. These terms are consistent with compliance grades provided by IPART and range from ‘Full Compliance’ to ‘Non Compliance’. 4 | GHD | Report for Independent Pricing and Regulatory Tribunal - Operational Audit of Sydney Water Corporation, 23/14602
1.8 Structure of this Report This chapter provides some background and information on Sydney Water, the scope of this audit and a discussion of audit methodology. Chapters 2 to 4 discuss compliance for each of the Licence parts assessed. In the appendices, we have provided: • A Glossary of abbreviations, terms used and definitions; • Detailed audit findings for each of sections of the Licence that were audited; • Our audit methodology; • Audit scope; • Attendees at audit interviews; and • A register of documents and evidence provided. GHD | Report for Independent Pricing and Regulatory Tribunal - Operational Audit of Sydney Water Corporation, 23/14602 | 5
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 and 26: Compliance Against Audited Licence
Page 27: Figure index Figure 1 Sydney Water'
Page 30 and 31: 1. Introduction 1.1 Sydney Water Co
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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