Integrated Water Cycle Management: Analysis of Resource Security

This paper presents a detailed summary on the impact of integrated water cycle management designs on the security of regional water supplies. The investigation examines the methodologies of the Sydney Water Supply Corporation and water consumption data of Greater Sydney residents to demonstrate the extent of regional water security.

The paper finds the use of demand management measures will not defer augmentation of the water supply headworks system. However, the installation of rainwater tanks has the potential to defer augmentation for many decades. Illustrations show conflicting environmental and economic objectives.

The analysis employs regional water demand models developed by Dr Peter Coombes to investigate the impacts of demand management measures and rainwater tanks on the economy and environment. The systems methodologies described in the paper have widespread application.

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Moving Towards an Integrated Urban Water Cycle

This report presents a comparative analysis of the traditional urban water cycle and the new systems approach to the urban water cycle.

The authors discuss the traditional method which consists of separate centralised systems for water supply, waste water management and storm water disposal. The study contends that traditional practice is inefficient and does not provide environmental sustainability. The traditional urban water cycle has remained largely unchanged for over a decade and the paradigm is firmly embedded into standard codes of practice.

A systems approach is required to understand and find optimum design solutions for water cycle management. The authors strongly recommend an integrated urban water cycle approach which aims to secure future sustainability in Australia. The report explores the design, constraints and benefits underlying an integrated strategy.

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Integrated Water and Energy Management at Newcastle “Nobby’s” Lighthouse

The paper discusses the proposed redevelopment of Newcastle “Nobby’s” Lighthouse site as an education site advocating integrated water cycle and energy management. Located in the Hunter region of New South Wales, Nobby’s Lighthouse has limited access to reticulated electricity and water services and minimal capacity for wastewater disposal.

It is envisaged that integrated water sensitive management strategies will include rainwater for hot water supplies, on site treatment, reuse of wastewater for toilet flushing and water efficient appliances and practices. Coupled with a water sensitive approach are strategies for minimised energy consumption. The paper presents the preliminary investigation and planning for an integrated water cycle management.

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South East Queensland Developments Going Beyond WSUD

New proposed residential developments in South East Queensland challenge conventional urban water cycle management methods adopted in Australia. The proposed development implements conventional water sensitive design techniques from a storm water management perspective, but embrace a much greater gamut of the integrated water cycle management concept.

Findings suggest prominent value in integrated water cycle management with research showing considerable benefits. A 75-80% reduction in mains water demand is possible and represents a target for all new urban developments. The report finishes with the authors thoughts and expectations of the projects progression in the coming years.

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