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Water Conservation Report WATER CONSERVATION REPORT MAY 2017 SEPTEMBER 2020 Version 1.0 – 30 August 2020 Address: 36 Honeysuckle Drive, Newcastle NSW 2300 Telephone: 1300 657 657 Fax: 02 49 499414 TTY: 13 1450 Website: www.hunterwater.com.au © Hunter Water Corporation, August 2020 ISSN: 1836-3253 ABN: 46228513446 Disclaimer Hunter Water makes every effort to ensure the accuracy of the information provided. However, Hunter Water accepts no responsibility for incorrect information and encourages the public to contact us directly for verification. Water Conservation Report, 2019-20 | 2 TABLE OF CONTENTS Executive Summary .............................................................................................................................. 4 Introduction ........................................................................................................................................... 5 1 Water conservation approach ..................................................................................................... 6 Why do we need to conserve water? ................................................................................... 6 Where do we need to conserve water? ................................................................................ 6 How are we conserving water?............................................................................................. 7 Who are we working with? .................................................................................................... 7 Monitoring and review ........................................................................................................... 7 Lower Hunter Water Security Plan ....................................................................................... 8 2 Our performance in 2019-20 ........................................................................................................ 9 Volumes of water sourced and supplied ............................................................................... 9 Water conservation upstream of water treatment plants .................................................... 11 2.2.1 Source Operating Strategy and Bulk Supply Procedure ....................................... 13 2.2.2 Evaporation reduction ............................................................................................ 13 2.2.3 Leakage in storage and transmission infrastructure .............................................. 13 Water conservation within & downstream of water treatment plants.................................. 14 2.3.1 Residential ............................................................................................................. 14 2.3.2 Non-Residential ..................................................................................................... 16 2.3.3 Reducing Hunter Water Leakage .......................................................................... 17 2.3.4 Alternative Sources ................................................................................................ 19 3 Five Year Water Conservation Work Program ......................................................................... 22 Program Overview .............................................................................................................. 22 Proposed Water Conservation Initiatives ........................................................................... 25 3.2.1 Residential ............................................................................................................. 25 3.2.2 Non-Residential ..................................................................................................... 28 3.2.3 Reducing Hunter Water leakage ............................................................................ 30 3.2.4 Alternative sources ................................................................................................ 31 Research and Development ............................................................................................... 31 Appendix A – Method overview ........................................................................................................ 33 A.1 Water conservation strategy for ‘catchment to water treatment plants’............................... 33 A.2 ELWC Methodology for ‘water treatment plants to tap’ .......................................................... 34 Appendix B – Operating Licence Reporting Manual requirements ............................................... 36 Water Conservation Report, 2019-20 | 3 EXECUTIVE SUMMARY Hunter Water is a state-owned corporation that strives to be a valued partner in delivering the aspirations of our region. We provide safe, reliable and efficient water and wastewater services to over half a million people in the Lower Hunter region. Our Operating Licence is the key regulatory instrument that enables and requires us to provide our services. This Water Conservation Report provides detailed information, in accordance with the requirements in our Operating Licence Reporting Manual, on the costs and water savings from the water conservation projects and activities Hunter Water carried out in 2019-20, as well as our water conservation plans for the next five years. Our water conservation activities support the delivery of the 2014 Lower Hunter Water Plan (LHWP) and the development of the next iteration of the plan referred to as the Lower Hunter Water Security Plan (LHWSP). Water conservation is a key element to managing the supply and demand balance for the Lower Hunter region. The Love Water campaign, launched early 2018, provided a brand position for Hunter Water as a leader in water conservation focus and action, and helped in significantly raising water literacy and awareness ahead of the 2019-20 drought period, leading to substantial behaviour change in how our community use water. The Love Water brand has since been adopted by several other utilities, nationally and internationally. Water conservation played a key part in Hunter Water’s drought response in 2019-20. Activities from the current water conservation plan were expanded and accelerated to provide additional support to customers reducing their consumption in response to water restrictions. In 2019-20, customer focussed leakage and water efficiency programs saved 1,197 megalitres, while active leak detection, pressure management and Hunter Water asset replacement programs contributed to the Infrastructure Leakage Index (ILI) decreasing from 1.15 to 1.01 and real losses from 3.6 to 3.2 kilolitres per day per kilometre of watermain. Household annual water consumption decreased from 175 to 156 kilolitres in 2019-20. This significant reduction was mainly due to the implementation of water restrictions and other drought related water conservation activities. Love Water proved a strong foundation for water restriction messaging and was a common thread for all our water conservation activities to galvanise a community effort to achieve water conservation goals together. The campaign contributed to annual customer demand being 14% lower than expected considering the dry and hot weather conditions, as well as strengthened Hunter Water’s reputation and position of trust in the community. Water conservation at Hunter Water targets water loss and water efficiency while seeking opportunities to introduce alternative, fit for purpose, water sources and support a more integrated approach to water planning. Water conservation initiatives are designed to focus on residential and non-residential customers and Hunter Water operational water consumption. Research partnerships with universities and other water utilities are also an important part of our approach to water conservation. This allows Hunter Water to keep up to date on the latest technologies and approaches and adopt or adapt them where appropriate. Some of the areas under investigation include behaviour change at scale, evaporation management and water efficiency rebate schemes. Water Conservation Report, 2019-20 | 4 INTRODUCTION Hunter Water is a state-owned corporation that provides safe, reliable and efficient water and wastewater services to over half a million people in the Lower Hunter region. We also manage the trunk stormwater channels in the Newcastle, Lake Macquarie and Cessnock local government areas. We are governed by the State Owned Corporations Act 1989 and the Hunter Water Act 1991. The NSW Government regulates Hunter Water’s operations through a number of regulatory bodies and instruments. Our Operating Licence is the key regulatory instrument that enables and requires us to provide services. The Operating Licence sets the terms and conditions that specify how services are provided. It contains quality and performance standards that must be achieved. The Operating Licence makes us accountable to the NSW government for our performance, which is monitored by the Independent Pricing and Regulatory Tribunal (IPART). This Water Conservation Report provides detailed information on our performance against Clauses 2.1.4 and 2.2.4 of the Operating Licence and has been prepared in accordance with the relevant sections of the associated Operating Licence Reporting Manual. Section 1 of the report provides information on Hunter Water’s overarching approach to water conservation, including how it is related to the LHWSP. Section 2 describes and explains the water conservation activities Hunter Water carried out during 2019-20 and provides information on the volumes of water drawn from all sources,
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