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

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Clause Requirement Grade and Reason Audit Questions Evidence Cited Audit Observations These parameters are monitored by Sydney Water to provide operational data to the irrigation customers for their on-site management and usage of recycled water. DONE Ongoing action - As the responsibility for plumbing regulation transfers from Sydney Water to the Office of Fair Trading, develop and agree on a Memorandum of Understanding between the two parties, which adequately manages the risks associated with RW plumbing. MOU between SWC and NSW Fair Trading. 8 June 2012. Provides for a cooperative relationship. Defines roles and responsibilities. Recognises the linked roles between safe supply of potable, recycled, wastewater and stormwater for SWC and the plumbing work impacts of the Plumbing and Drainage Code Act 2011 (NSW). 2011-12 Annual RWQM Report FINAL In the 2011-12 financial year, all recycled water schemes achieved full compliance with health and environmental performance targets. Total iron concentration at Liverpool Water Recycling Plant (WRP) marginally exceeded the 100 year average long term trigger value (LTV) as recommended by the AGWR, but was below the 20 year average short term trigger value (STV). The observed iron concentration is not considered to pose a significant health or environmental risk and is monitored by Sydney Water to provide operational data to the irrigation customers for their on-site management and usage of recycled water. A new scheme, Hoxton Park Recycled Water Scheme, is being commissioned. The scheme will supply recycled water for non-potable uses to residential and industrial customers in the Campbelltown and Liverpool Local Government Areas. The quality of residential recycled water, industrial recycled water, and environmental flows for the period 1 July 2011 to 30 June 2012 was monitored and assessed according to the respective RWQMPs. Irrigation schemes were assessed against relevant parameters from available guidelines for the particular recycled water use, and specific customer requirements as per the individual customer agreements in place. The long term trigger value (LTV, 100-year average), and the short term trigger value (STV, 20-year average) as recommended by the AGWR, are the same as the guidelines currently used for the irrigation schemes. So for some parameters, performance was actually compared against the AGWR requirements. All recycled water schemes achieved full compliance with health and environmental performance requirements. Total iron concentration at Liverpool WRP marginally exceeded the LTV recommended by the AGWR, but was below the STV. This parameter is monitored by Sydney 64 | GHD | Report for Independent Pricing and Regulatory Tribunal - Operational Audit of Sydney Water Corporation, 23/14602
Clause Requirement Grade and Reason Audit Questions Evidence Cited Audit Observations Water to provide operational data to the irrigation customers for their onsite management and usage of recycled water. DONE Completed action – Reviewed MoU with Fire & Rescue NSW and NSW Rural Fire Service. Procedure adopted for prompt communication of recycled water quality exceedances. GHD | Report for Independent Pricing and Regulatory Tribunal - Operational Audit of Sydney Water Corporation, 23/14602 | 65
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Independent Pricing and Regulatory
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© Independent Pricing and Regulato
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Executive Summary Executive Summary
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1 Introduction and scope 1 Introduc
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1 Introduction and scope Under our
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2 Overview of audit findings and re
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2 Overview of audit findings and re
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3 Progress on 2010/11 audit recomme
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A Operational Audit Report 2011/12
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Executive summary Introduction GHD
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Compliance Against Audited Licence
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Figure index Figure 1 Sydney Water'
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1. Introduction 1.1 Sydney Water Co
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1.5 Audit Methodology The operation
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2. Water Quality - Part 2 2.1 Summa
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Information provided by Sydney Wate
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In particular, routine verification
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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,
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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
Page 84 and 85: Appendix C - Water Quality Detailed
Page 86 and 87: Clause Requirement Grade and Reason
Page 94 and 95: Appendix D - Water Quality Detailed
Page 96 and 97: Appendix E - Infrastructure Perform
Page 108 and 109: Appendix F - Water Conservation Det
Page 118 and 119: Appendix G - Audit Methodology GHD
Page 120 and 121: Audit Methodology The methodology a
Page 122 and 123: 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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