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

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2 Overview of audit findings and recommendations 2.2 Infrastructure Performance Sydney Water has achieved full compliance with the audited sub-clause for Infrastructure Performance. Part 3 of the licence outlines the asset management framework, as well as system performance standards (for water continuity, water pressure and sewage overflows) and the Priority Sewage Program. Under the risk-based auditing framework, we consider this part of the licence to be one that poses a high risk in terms of the likelihood and consequence of non-compliance. The auditor found that Sydney Water has demonstrated high standards of asset management, which has enabled Sydney Water to provide services of an excellent standard to its customers. Sydney Water has managed its assets under the asset management framework described in clause 3.1.2 of its operating licence. As evidence of this, Sydney Water has presented a comprehensive suite of plans, strategies and controlled documents covering all classes of assets. Table 2.2 Infrastructure Performance compliance grades awarded for Sydney Water’s Operating Licence 2010-2015 Clause Requirement Compliance Grading 3 Infrastructure performance 2010/11a 2011/12b 2012/13 2013/14 2014/15 3.1.1 Asset management requirement – Managing assets Full Full a 2010/11 compliance grades awarded to Sydney Water. b 2011/12 compliance grades awarded to Sydney Water. Source: IPART, Sydney Water Corporation Operational Audit 2010/11, Report to the Minister, November 2011. Source: GHD, Independent Pricing and Regulatory Tribunal Operational Audit of Sydney Water Corporation, November 2012. We agree with the auditor that there are no recommendations to be made for this part of the licence. The auditor has noted 6 opportunities where it may be able to improve its operations. The auditor’s suggestions relate to improving Sydney Water’s asset management and internal processes (for further details, see the auditor’s report in Appendix A). We will request Sydney Water to consider the prudency and efficiency of implementing such opportunities. 8 IPART Sydney Water Corporation Operational Audit 2011/12
2 Overview of audit findings and recommendations 2.3 Water conservation Sydney Water has achieved full compliance with the audited sub-clauses for water conservation. Part 7 of the licence details a specified water usage level and outlines Sydney Water’s requirements for reporting on initiatives to promote water conservation activities. We consider non-compliance with elements of this part of the licence would constitute a moderate risk in terms of meeting the water needs of Sydney Water’s customers. The auditor found that Sydney Water has shown an ongoing commitment to water conservation and providing value for money to its customers. As part of its Leakage Management Strategy, Sydney Water has implemented a number of water loss management and renewals programs. These programs have been successful in limiting the water leakage reported to within the acceptable limits. 9 Table 2.3 Water Conservation compliance grades awarded for Sydney Water’s Operating Licence 2010-2015 Clause Requirement Compliance Grading 7 Water conservation 2010/11a 2011/12b 2012/13 2013/14 2014/15 7.2 Water leakage Full Full a 2010/11 compliance grades awarded to Sydney Water. b 2011/12 compliance grades awarded to Sydney Water. Source: IPART, Sydney Water Corporation Operational Audit 2010/11, Report to the Minister, November 2011. Source: GHD, Independent Pricing and Regulatory Tribunal Operational Audit of Sydney Water Corporation, November 2012. We agree with the auditor that there are no recommendations to be made for this part of the licence. The auditor has noted 5 opportunities where it may be able to improve its operations. The auditor’s suggestions relate to improving Sydney Water’s asset management and internal processes (for further details, see the auditor’s report in Appendix A). We will request Sydney Water to consider the prudency and efficiency of implementing such opportunities. 9 Clause 7.2(a) of Sydney Water’s operating licence indicates that the level of water leakage from Sydney Water’s drinking water supply must not exceed 105 ML/d with an agreed band of uncertainty of +/- 16 ML/d. In 2011/12, Sydney Water’s reported water leakage was 115.4 ML/d, which is within the agreed band. Sydney Water Corporation Operational Audit 2011/12 IPART 9
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: 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 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
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Page 56 and 57: Clause Requirement Grade Reason a S
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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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