Expert opinion on risks to the long-term viability of residential recycled water schemes: an Australian study

West, Camilla, Kenway, Steven, Hassall, Maureen and Yuan, Zhiguo (2017) Expert opinion on risks to the long-term viability of residential recycled water schemes: an Australian study. Water Research, 120 133-145. doi:10.1016/j.watres.2017.04.077

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Author West, Camilla
Kenway, Steven
Hassall, Maureen
Yuan, Zhiguo
Title Expert opinion on risks to the long-term viability of residential recycled water schemes: an Australian study
Journal name Water Research   Check publisher's open access policy
ISSN 1879-2448
Publication date 2017-09-01
Year available 2017
Sub-type Article (original research)
DOI 10.1016/j.watres.2017.04.077
Open Access Status Not yet assessed
Volume 120
Start page 133
End page 145
Total pages 13
Place of publication London, SW1H 0QS United Kingdom
Publisher I W A Publishing
Language eng
Subject 2302 Ecological Modelling
2312 Water Science and Technology
2311 Waste Management and Disposal
2310 Pollution
Abstract The water sector needs to make efficient and prudent investment decisions by carefully considering the long-term viability of water infrastructure projects. To support the assessment and planning of residential recycled water schemes in Australia, we have sought to clarify scheme objectives and to further define the array of critical risks that can impact the long-term viability of schemes. Building on historical information, we conducted a national survey which elicited responses from 88 Australian expert practitioners, of which 64% have over 10 years of industry experience and 42% have experience with more than five residential recycled water schemes. On the basis of expert opinion, residential recycled water schemes are considered to be highly relevant for diversifying and improving water supply security, reducing wastewater effluent discharge and pollutant load to waterways and contributing to sustainable urban development. At present however, the inability to demonstrate an incontestable business case is posing a significant risk to the long-term viability of residential recycled water schemes. Political, regulatory, organisational and financial factors were also rated as critical risks, in addition to community risk perception and fall in demand. The survey results shed further light on the regulatory environment of residential recycled water schemes, with regulatory participants rating the level and impact of risk factors higher than other survey participants in most cases. The research outcomes provide a comprehensive understanding of the critical risks to the long-term viability of residential recycled water schemes, thereby enabling the specification of targeted risk management measures at the assessment and planning stage of a scheme.
Keyword Expert opinion
Investment risk
Recycled water scheme
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID DECRA DE100101322
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
HERDC Pre-Audit
Advanced Water Management Centre Publications
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Citation counts: TR Web of Science Citation Count  Cited 1 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 2 times in Scopus Article | Citations
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