Staying ahead of a drying climate in Western Australia

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Staying ahead of a drying climate in Western
Australia
Alan Warburton Manager, Mechanical Electrical
Services December 2008
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Outline

• Water Corporation of Western Australia -
  Introduction
• Impact of Climate Change on our water resources
  the challenge of living in drying climate
• Our Future - Security through diversity

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Las Vegas
15,398 km 9,562 miles
Perth
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Darwin
Brisbane
Perth
Canberra
Sydney
Adelaide
Melbourne
Hobart
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WA, a State of Resources Agriculture
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Perth, Western Australia
Population 1.6 million
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The Water Corporation
One of the worlds largest water utilities
servicing a geographical area of over 2.5
million square kilometres (approx. 1 million
square miles)
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We deliver Nearly 343 billion litres of
high-quality drinking water to over 1.8 million
people
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Our integrated schemes serve the more densely
populated areas in the South West of the
State We also have many stand-alone schemes
serving communities across the State
Perth
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We operate 101 wastewater treatment plants and
treat over 140 billion litres of wastewater per
year
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Outline

• Water Corporation of Western Australia -
  Introduction
• Impact of Climate Change on our water resources
  the challenge of living in a drying climate
• Our Future - Security through diversity

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The Drying Climate has reduced our supply of
surface water
Total Annual Inflow to Perth Dams (GL)
2008 70 GL
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Predictions suggest the climate will continue to
get drier
Drier 2030 Wetter
Annual rainfall change ()
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Integrated Water Supply Scheme 1993
Perth
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Integrated Water Supply Scheme 2007
Perth
Perth Desal Plant
KWRP
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Integrated Water Supply Scheme 2011
Perth
Perth Desal Plant
KWRP
Southern Desal Plant
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Decreasing yields have necessitated investment in
new water sources
340.0
2500
De-rated to Post 2000 climate
De-rated to Post 1996 climate
320.0
2000
De-rated to Post 1974 climate
300.0
Restrictions / Water efficiency measures
introduced
1500
280.0
Total Investment since 1996 (M)
Demand / Source Yield (GL)
260.0
1000
240.0
500
220.0
200.0
0
1996
1998
2000
2002
2004
2006
2008
2010
2012
2014
Total Investment Since 1996
Demand (GL)
System Yield
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Outline

• Water Corporation of Western Australia -
  Introduction
• Impact of Climate Change on our water resources
  the challenge of living in a drying climate
• Our Future - Security through diversity

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Security through Diversity
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Perth Seawater Desalination Plant
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Groundwater
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Irrigation Water Trading
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Catchment Management
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Wastewater Reuse
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GROUND WATER REPLENISHMENT, SWAN COASTAL PLAIN,
PERTH
Injection Bore
Infiltration Ponds
Caves
Coastal Limestone
River
Wetland
Guildford Clay
Superficial aquifer
Indian Ocean
watertable
Confining Bed
Confining Bed
Leederville aquifer
Darling Fault
Confining Bed
Confining Bed
Yarragadee aquifer
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We are working to reduce water demand through the
smarter use of water
System
Behavioural
Infrastructure
Retrofitting
Water Restrictions
Waterwise Programs
Research Development
Regulation/ Legislation
Community Education
Non Drinking Water
NDW demo projects (Brighton) NDW decision making
frameworks Corporate NDW positioning
Water efficiency policy Mandatory National
Labelling Smart Approved Watermark 5 Star Plus
building codes Cost-reflective pricing
Daytime sprinkler ban 2 day/week sprinkler
roster Appropriate watering regimes

• Businesses
• Plumbers
• Land Developments
• Display Villages
• Garden Centres
• Irrigators
• Partners
• Local Councils

Pressure reduction trials Reduced flow
meters Leak detection program
Waterwise Rebates Program Water use efficiency
initiatives Waterwise Plumbers trials JTC retrofit
Schools Waterwise Accounts Community Based Social
Marketing Education Marketing Seminars
Integrated Resource Planning Water Sensitive
Communities Soil moisture sensor
trials Watersmart project Water efficient turfs
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In Closing

• Australia has no choice but to be a world leader
  in coping with a drying climate
• We must expect further drying and we must adapt
• We are all in it together the community and the
  economy
• The key is Security through Diversity

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