The following reports have been undertaken as part of the Future Water Strategy’s recommended investigations into water source options to augment the current bulk supply in the region. Further reports will be made available as they are finalised.
Integrated Water Cycle Management Development: Assessment of Augmentation Scenarios [PDF 4.6 MB]
Hydrosphere Consulting (2020)
This report compares two potential source augmentation scenarios to provide water security to 2060 based on the triple bottom line considerations of social, economic and environmental factors.
The two scenarios are:
The multi-criteria analysis identifies Scenario 1 as the most favourable when solely focussing on the 2060 planning horizon. However, the report recommends that Rous County Council should consider Scenario 2 based on a whole of life costing assessment and the additional water security that is provided beyond the 2060 planning horizon. This recommendation is supported by Council’s policy when considering new infrastructure options.
Ref: Hydrosphere Consulting (2020), Rous Regional Supply: Future Water Project 2060 Integrated Water Cycle Management Development: Assessment of Augmentation Scenarios, June 2020.
Demand Forecast Report
Rous County Council Bulk Water Supply: Demand Forecast 2020 – 2060 [PDF 10MB]
Hydrosphere Consulting Pty Ltd (2020)
This report provides a forecast for the demand of bulk water supply required for Rous County Council’s supply area from the present until 2060. Using data on water consumption, regional growth prediction, water efficiency and advice from Rous County Council and its constituent councils, the report details forecasts for various demand scenarios.
This Demand Forecast Report updates the previous 2014 report which estimated that by 2060, 15,790 ML/a was required, given the recent changes in the standards that apply in determining the forecast the revised figure is now 16,328ML/a.
Ref: Hydrosphere Consulting (2020) Rous County Council Bulk Water Supply: Demand Forecast 2020 – 2060 Final Draft Report, April 2020
Future Water Strategy: Groundwater Schemes and Whole of Life Cycle Costings – Report B [PDF 448KB]
This report provides estimate costings and viability for various potential groundwater sources that could be accessed to add to the current water supplies. The report investigates four groundwater options and costs out the whole of life scenarios including the mechanisms required to integrate the groundwater into the current Rous County Council’s water distribution systems.
Ref: Jacobs (2020) Future Water Strategy: Groundwater Schemes and Whole of Life Cycle Costings – Report B, March 2020
Rous County Council: Desalination Investigation [PDF 14.2MB]
GANDEN Pty Ltd (2020)
This report is a feasibility study into the provision of a desalination plant as an additional future water supply. The report assumes the construction of a single large-scale Seawater Reverse Osmosis facility, comparing 3 various site locations. It prices out each potential project and identifies recommended technology; benchmarking the plants with two similar sized desalination projects.
The report’s main conclusions are that cost of a desalination plant is significant both in construction, and its ongoing operation. It further advises that desalination, as a future water source, can only be justified from an economic sense when operated at close to full capacity on a continual basis.
However, from a public perception point of view, the operation of a desalination facility can only be justified when all other sources of drinking water supply are threatened by severe drought.
Ref: GANDEN (2020), Rous County Council: Desalination Investigation – Rev B, April 2020.
Preliminary Feasibility Report: Investigation of Water Reuse as an Additional Water Source [PDF 37MB]
City Water Technology Pty Ltd (2020)
This report investigates the feasibility of effluent water reuse to augment the current bulk water supply. Wastewater treatment plants (WWTP) are owned by local government agencies within the Rous County Council supply area. The report identifies that there are currently wastewater treatment plant water reuse schemes in operation, and analyses both these and planned reuse scenarios. The report discusses regulatory requirements for recycled water use and provides case studies in both Australia and internationally. It continues on to analyse both indirect potable and direct non potable reuse and water saving schemes.
From the analysis conducted, two preferred options for water reuse have been identified for further consideration.
Consultation with NSW Government Agencies on the analysis is ongoing.
Ref: City Water Technology Pty Ltd (2020), Preliminary Feasibility Report: Investigation of Water Reuse as an Additional Water Source, May 2020
Rous County Council: Future Water Strategy: Coarse Screening Assessment of Options [PDF 700KB]
Hydrosphere Consulting Pty Ltd (2020)
This options report provides a coarse fail or pass assessment of Future Water Project bulk water system augmentations. It provides historical information on the 2014 Future Water Strategy Integrated Water Planning Process (IWPP) and the 2014 conclusion of considered options. The report then screens and assesses the options which passed the IWP and lists their outcome in the updated 2020 assessment. The final coarse assessment assesses the 9 IWP passed options against Reliability, Sustainability, Accessibility, Compatibility and Achievability indicators to determine a final pass or fail conclusion for each option.
Based on the conclusions of the course assessment and the viability results of other option investigations, Rous will further assess scenarios that will include one or a number of the following options: Groundwater schemes, combined with either indirect potable reuse options or localised desalination, or; the Dunoon Dam proposal.
Ref: Hydrosphere Consulting (2020). Rous County Council Future Water Strategy: Coarse Screening Assessment of Options – Final Report, March 2020.