6th
International Disaster and Risk Conference IDRC 2016
‘Integrative Risk Management – Towards Resilient Cities‘ • 28 Aug – 1 Sept 2016 • Davos • Switzerland
www.grforum.org
Integrative Risk Assessment and
Management for Recycled Water
Schemes: an Australian Study
Camilla West
PhD Candidate, The University of Queensland
Australia

6th
International Disaster and Risk Conference IDRC 2016
‘Integrative Risk Management – Towards Resilient Cities‘ • 28 Aug – 1 Sept 2016 • Davos • Switzerland
www.grforum.org
Introduction to residential recycled water
schemes (RRWS)
Water
Treatment
Plant
Wastewater
Treatment
Plant
Dishwasher
Taps
Shower
Leaks
Outdoor
Clothes washing
Toilet
Household end-
use demand
Irrigation
Waterway
or ocean
outfall
Advanced
Water
Treatment
Plant
Stormwater
harvesting

6th
International Disaster and Risk Conference IDRC 2016
‘Integrative Risk Management – Towards Resilient Cities‘ • 28 Aug – 1 Sept 2016 • Davos • Switzerland
www.grforum.org
Water
Treatment
Plant
Wastewater
Treatment
Plant
Household
end-use
demand
Waterway or
ocean
outfall
Advanced
Water
Treatment
Plant
Stormwater
harvesting
Potable water
Recycled water
Stormwater
Reduce peak
potable water
demand
$$
$$
Reduce effluent
discharge
Reduce
stormwater
runoff
Scheme objectives

6th
International Disaster and Risk Conference IDRC 2016
‘Integrative Risk Management – Towards Resilient Cities‘ • 28 Aug – 1 Sept 2016 • Davos • Switzerland
www.grforum.org
Scheme status
South
Australia
Queensland
New South
Wales
Vic
Source: West et al. 2016, Why do residential recycled water schemes fail?, Water Research

6th
International Disaster and Risk Conference IDRC 2016
‘Integrative Risk Management – Towards Resilient Cities‘ • 28 Aug – 1 Sept 2016 • Davos • Switzerland
www.grforum.org
Source: West et al. 2016, Why do residential recycled water schemes fail?, Water Research
Risks to the long-term viability of schemes

6th
International Disaster and Risk Conference IDRC 2016
‘Integrative Risk Management – Towards Resilient Cities‘ • 28 Aug – 1 Sept 2016 • Davos • Switzerland
www.grforum.org
A B
Source: West et al. 2016, Industry perceptions of residential recycled water schemes : an Australian survey, in preparation
Historical observations Industry perceptions

6th
International Disaster and Risk Conference IDRC 2016
‘Integrative Risk Management – Towards Resilient Cities‘ • 28 Aug – 1 Sept 2016 • Davos • Switzerland
www.grforum.org
Source: West et al. 2016, Industry perceptions of residential recycled water schemes : an Australian survey, in preparation
Risk level rank by stakeholder

6th
International Disaster and Risk Conference IDRC 2016
‘Integrative Risk Management – Towards Resilient Cities‘ • 28 Aug – 1 Sept 2016 • Davos • Switzerland
www.grforum.org
 Poorly defined project objectives
 Focus on regulated, quantifiable risk factors
 Independent approach to risk assessment and
management
 Inadequate consideration to time and context
Limitations of risk assessment and
management practices

6th
International Disaster and Risk Conference IDRC 2016
‘Integrative Risk Management – Towards Resilient Cities‘ • 28 Aug – 1 Sept 2016 • Davos • Switzerland
www.grforum.org
Thank you
c.west@awmc.uq.edu.au