Water Conservation Report 2018-2019
Total Page:16
File Type:pdf, Size:1020Kb
Water Conservation Report 2018-2019 . Table of contents Executive summary ...................................................................................................................... 4 1 Introduction ............................................................................................................................. 7 1.1 Context of drought .............................................................................................................................. 8 1.2 Water Restrictions ............................................................................................................................... 9 2 Our performance in 2018-19 ................................................................................................. 11 2.1 Water use in 2018-19 ......................................................................................................................... 11 2.2 Water conservation in 2018-19 ......................................................................................................... 13 3 Our forward plan ................................................................................................................... 15 3.1 Water conservation for 2019-20 ....................................................................................................... 15 3.2 Water conservation plan: 2019-20 to 2023-24 ................................................................................. 16 4 Water conservation to date ................................................................................................... 18 4.1 Residential water efficiency.............................................................................................................. 18 4.1.1 WaterFix Residential .................................................................................................................... 18 4.1.2 WaterFix Strata ............................................................................................................................ 19 4.1.3 PlumbAssist ................................................................................................................................. 20 4.1.4 Concealed leak detection ............................................................................................................ 20 4.1.5 Rainwater tank repair pilot ........................................................................................................... 20 4.2 Business water efficiency ................................................................................................................. 21 4.2.1 Council partnerships .................................................................................................................... 22 4.2.2 Water efficiency in Schools .......................................................................................................... 22 4.3 Leakage management ....................................................................................................................... 23 4.4 Water recycling .................................................................................................................................. 24 4.4.1 Our water recycling ...................................................................................................................... 24 4.4.2 Third party schemes .................................................................................................................... 24 4.5 Education and awareness ................................................................................................................. 25 4.5.1 Community awareness campaign................................................................................................ 25 4.5.2 Water Savings.............................................................................................................................. 29 4.5.3 Formal education and community tours ...................................................................................... 29 4.6 Regulatory measures ........................................................................................................................ 30 4.7 Discontinued programs prior to 2018-19 ........................................................................................ 30 5 Future water conservation .................................................................................................... 31 5.1.1 WaterFix Business and Government and WaterFix Small Business ........................................... 31 5.1.2 Enhanced Leakage Response ..................................................................................................... 31 5.1.3 Community awareness campaigns .............................................................................................. 31 5.1.4 Filter Assessment and Improvements at Water Filtration Plants (WFP) ..................................... 32 5.2 Research and development activities ............................................................................................. 32 5.2.1 New recycled water opportunities ................................................................................................ 32 5.2.2 Developing and adopting new end use technologies .................................................................. 32 5.2.3 End use study: Understanding how customers use water at home ............................................ 33 Water Conservation Report | 2018-2019 Page | 2 5.2.4 Trial – Digital meters .................................................................................................................... 34 5.2.5 Advanced pipe sensing for leaks and breaks .............................................................................. 34 Appendix A Reporting Requirements ........................................................................................ 35 Appendix B Method Overview .................................................................................................... 36 Appendix C Recycled water ....................................................................................................... 40 Appendix D Leakage management ............................................................................................ 41 Appendix E Past programs ........................................................................................................ 43 Appendix F Glossary .................................................................................................................. 46 Appendix G List of acronyms and units .................................................................................... 47 Water Conservation Report | 2018-2019 Page | 3 Executive summary This report outlines our Water Conservation Plan for the next five years and reports on the costs and water savings from our water conservation programs run in 2018-19. This plan supports delivery of the NSW Government’s Metropolitan Water Plan, which recognises the critical value of water conservation in balancing supply and demand for greater Sydney. Our approach to the Economic Level of Water Conservation (ELWC) is based on the Economic Level of Water Conservation (ELWC) methodology1 approved by IPART in December 2016. The ELWC methodology promotes economically efficient water conservation projects that consider social and environmental costs and benefits in addition to the cost of the program and the water saved. Where projects are considered economically efficient at the current value of water, we have included them in our five-year plan. The plan also includes water conservation projects offered to help manage social hardship and build capability. 2018-19 Sydney continues to experience dry conditions with dam levels of 52.1% (1 July 2019). Despite a 26% increase in population the total demand for drinking water remains lower than it did before mandatory restrictions were introduced in late 2003. Total water use for 2018-19 was 567,824 million litres (ML) or 300.5 litres per person per day, of which 195 litres per person per day is for residential use. In 2018-19, we • spent $2.3M to increase water savings by 236 million litres per year. We achieved savings higher than forecast for WaterFix Strata, WaterFix Residential and PlumbAssist due to increased program take-up. We achieved savings lower than forecast for the Rainwater Tank Repair Pilot due to low repair take-up and Council Partnerships due to time taken to engage and onboard council partners. More than 14,000 residential customers participated in our water efficiency and education programs. • spent $1.6M to maintain baseline leakage levels. Leakage increased from last year to 131 ML per day, exceeding the Economic Level of Leakage of 108±16 ML per day due to a prolonged period of hot and dry weather. The last two years have seen exceptional climatic conditions as we moved into drought. Our leakage of approximately 9% is still within the top band of the International Leakage Index and compares well against other developed countries. Sydney Water rates in the top 10% of water utilities for minimising leaks. 1 http://www.sydneywater.com.au/web/groups/publicwebcontent/documents/document/zgrf/mtg0/~edisp/dd_1 84330.pdf Water Conservation Report | 2018-2019 Page | 4 • spent $25.7M operating existing recycled water schemes that produced 44 billion litres of recycled water offsetting drinking water demand by 12 billion litres. There was an increased customer awareness around