Eurobodalla Integrated Water Cycle Management Strategy

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x Eurobodalla Integrated Water Cycle Management Strategy ENVIRONMENTAL Ensure the efficient use of the fresh water resource Minimises water extractions and protects low flows 0 Traditional Integrated Scenarios 1 2 3 4 5 6 7 DM DM + RWT DM + RWT DM + RWT DM + RWT + Agri. DM + RWT + agri. + reuse + pot. 6 + EF Substitution 0 1 2 2 2 3 3 3 0 1 2 2 2 3 3 3 Minimises green house gas emissions 3 3 3 2 2 1 1 1 Minimises pollutants being discharged to the aquatic environment 1 1 1 1 1 2 2 3 Minimises urban stormwater volumes 0 0 1 1 2 2 2 3 Ensure sustainable practices 0 1 2 2 2 3 3 3 Environmental Sum 4 7 11 10 11 14 14 16 Environmental Rank 8 7 4 6 4 2 2 1 SOCIAL Improves security of town water supply 0 1 2 2 2 3 3 3 Improves the quality of drinking water 0 0 0 2 3 3 3 3 Improves urban water service levels 1 1 2 2 3 3 3 3 Increase public awareness of urban water issues 1 2 3 3 3 3 3 3 Minimises non-compliance to legislation 3 3 3 3 3 3 3 3 Protects public health 2 2 2 3 3 3 3 3 Social Sum 7 9 12 15 17 18 18 18 Social Rank 8 7 6 5 4 1 1 1 ECONOMIC NPV @ 7% in $m Water Supply 110.3 64.2 73.1 74.7 76.8 76.8 77.3 71.2 Sewerage 79.7 26.1 30.7 30.7 31.4 40.8 40.8 40.8 Stormwater 8.5 0 0 0 0 8.5 8.5 11.7 Sub-total 198.5 90.3 103.8 Change in the typical residential rate bill from the traditional scenario 105. 4 108.2 126.1 126.6 Water Supply 0 -124 -144 -137 -128 -128 -122 -149 Sewerage 0 -192 -186 -186 -181 -145 -145 -145 Stormwater 0 Financial Rank 8 1 2 3 4 6 7 5 TBL Sum 24 15 12 14 12 9 10 7 TBL Rank 8 7 4 6 4 2 3 1 Savings from Traditional Case (NPV @ 7%) Water Supply 0 46.1 37.2 35.6 33.5 33.5 32.9 39.1 Sewerage 0 53.6 49.0 49.0 48.3 38.9 38.9 38.9 Stormwater 0 - - - - 0 0 +3.2 123. 7
Eurobodalla Integrated Water Cycle Management Strategy How Do We Know the Issues Are Fixed? Eurobodalla’s integrated water cycle management strategy offers significant environmental, social and economic benefits. The overall result of the IWCM process for Eurobodalla is better environmental and social outcomes at a lower cost. The outcomes of the strategy provide a baseline against which to benchmark future reviews and ESC's journey towards achieving sustainable integrated water cycle management. The identified outcomes include: Environmental Outcomes A reduction in the amount of water drawn for urban supply from the Shire’s rivers through demand management measures and use of rainwater tanks. Better protection of low flows and preservation of natural flow patterns leading to improved environmental water quality and improved aquatic habitat conditions. A reduction in future water storage requirements needed to provide the higher level of low-flow protection. Reduced pollution of the waterways and coastal lakes through improved wastewater and stormwater management, source control, sewage pump station and treatment plant upgrades. Reduced effluent discharges to waterways through the reductions in urban water use, stormwater inflow and groundwater infiltration, and the development of water reuse systems, leading to improved recreational water quality. Improved management of existing on-site wastewater systems in the villages resulting in lower environmental public health risk and improved sustainability of local aquifers. Reduces greenhouse gas emissions and energy consumption. Streamlined subsequent environmental impact assessments, reducing study times and costs. Social Outcomes Improved drought security and reliability of supply through increased delivery capacity and faster refilling of the Deep Creek storage. Improved water quality and public health protection for regional water supply consumers through the construction of water filtration plants. Existing deficiencies in the levels of service to consumers are addressed. In one integrated option there is an opportunity for further savings by deferring the need for a Southern dam beyond the adopted 30 year planning horizon by using reclaimed water to meet environmental flow needs. Provision of backyard supply sources (rainwater tanks) provide customers with supply source choice and an appreciation of their water use pattern resulting in lower water use in the long term. The comprehensive demand management program in addition to delivering savings in water bills will also result in electricity savings. xi
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Page 44 and 45: FACT SHEET 3 Rainwater Tanks 18 Eur
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36 Eurobodalla Integrated Water Cyc
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38 Number of Persons 2,500 2,000 1,
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42 % Occupancy 80% 70% 60% 50% 40%
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46 Annual Volume (ML/Yr) 2,500 2,00
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48 Demand ML/a Eurobodalla Integrat
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6.5.3 Stormwater Issues 58 Euroboda
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8.3.2 Immediate Measures 84 Eurobod
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9.2 South Durras 9.2.1 Background 1
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124 Provision of full reticulated s
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132 Stormwater Eurobodalla Integrat
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9.5 Mogo 9.5.1 Background 140 Eurob
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144 Social Issues Eurobodalla Integ
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9.11 Potato Point 9.11.1 Background
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9.14.2 What are the Issues? 202 Eur
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9.15.2 What Are the Issues? 208 Eur
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214 ML/a 8000 7000 6000 5000 4000 3
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216 ML/a Eurobodalla Integrated Wat
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228 SCENARIO 1 Regional Water Suppl
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Eurobodalla Integrated Water Cycle Management Strategy

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