Staying ahead of a DryingStaying ahead of a Drying Climate

CEDA Infrastructure Series –

Dr Jim GillChi f E ti Offi W t C ti

Event 4: Gas, Water & Electricity

Chief Executive Officer - Water Corporation

2 November 2005

Overview

The drying climate and its impact on water suppliespp

Directions in Infrastructure

Planning for the Future – 50 years ahead Our Vision

Security Through DiversitySustainable Management of water services to make WA a great place to live

and in estConclusion

and invest

Australia is Heating

What are the Implications? Warming will change general climatic patterns and there will be

greater climatic variability

Drier 2030 Wetter

60 40 20 0 20 40 60-60 -40 -20 0 20 40 60Rainfall Change (%)

Annual rainfall change (%)

Impact on Water Availability - WA Reduced Inflows to Dams

900

1000Annual Total 1911-1974 av (338 GL)

700

800

900

ams*

* (G

L)

1911 1974 av (338 GL)1975 - 1996 av (177 GL)1997 -2004 av (115 GL)

500

600

w to

Per

th D

a

2001, 88% less

300

400

nnua

l* In

flow

52% less

100

200

Tota

l An

64% less

0

1911

1914

1917

1920

1923

1926

1929

1932

1935

1938

1941

1944

1947

1950

1953

1956

1959

1962

1965

1968

1971

1974

1977

1980

1983

1986

1989

1992

1995

1998

2001

2004

N t A i t k M t A ilNotes: - A year is taken as May to April - 2005/06 inflow to 26 Oct 2005

Water Restrictions imposed

Goldfields and AgriculturalWater supply

PinjarPinjar

WannerooWanneroo

LexiaLexia

NeerabupNeerabup

South WhitfordsSouth Whitfords

PERTHPERTH

Water supply

MundaringMundaring

LexiaLexiaMirrabookaMirrabooka

South WhitfordsSouth Whitfords

GwelupGwelup Integrated Water Supply Schemeexpansionexpansion

MundaringMundaringVictoriaVictoria

CanningCanningJandakotJandakot

Ground water north of Swan River

SerpentineSerpentine

gg

WungongWungong Dams south of Swan River

KwinanaKwinanadesalination plantdesalination plant

MandurahMandurah

SerpentineSerpentine

North DandalupNorth DandalupTransport over 175 km between top and bottom

South DandalupSouth Dandalup

AREA SERVEDAREA SERVED

and bottomLower South Lower South Dandalup pumpbackDandalup pumpback

SURFACE WATER DAMSURFACE WATER DAM

GROUNDWATER SOURCEGROUNDWATER SOURCE

TRUNK MAINSTRUNK MAINS

StirlingStirling

Samson PipeheadSamson Pipehead

GROUNDWATER SOURCEGROUNDWATER SOURCE

SURFACE WATER CATCHMENTSURFACE WATER CATCHMENT

StirlingStirling

WokalupWokaluppumpbackpumpback

Directions in Infrastructure$5 Year Capital Program – approx $3B

Year 1 (FY05/06) now in excess of $0.7B

Step increase in the size of the program driven by:

Climate change;R id ti l thResidential growth;Infrastructure Development;Community expectations;Community expectations;Enhanced standards; Technology;Technology; Asset replacement and refurbishment

Water RecyclingSmarter use of Water

Desalination

Groundwater

Catchment Management

Groundwater

Surface WaterWater Trading

DesalinationA ‘ li t ’ f t l

Coolgardie, 1896

A ‘climate’ proof water supply

Perth Seawater Desalination Project

Biggest single water source feeding into the IWSS (extra 45 GL)

Climate independent source

Reverse osmosis technology e e se os os s ec o ogy

Powered by renewable energy (wind)

Contract to build and operateContract to build and operate

Short-listed in 2002

Awarded in 2005 (Capital $387M / Operating $20M pa)

Completion late 2006

Multiplex / Degremont Joint Venture

South West Yarragadee Aquifer

Water Recycling – a Valuable Resource

K i W t R l ti Pl tKwinana Water Reclamation Plant

Irrigation of Golf Courses and Playing fields

Water TradingHarvey Water 17 GL by Oct 2007

$70million program replacing open irrigation canals with pipes to develop a pressurised irrigationdevelop a pressurised irrigation system

Further Opportunities in Collie Irrigation Area being investigated

Smarter Use of WaterSettlers HillsPartnering with Industry

-Tradelink Environmental Solutions CentreSmarter Use of Water

Waterwise Display

Smarter Use of WaterTradelink Environmental Solutions Centre

Waterwise Display Villages

Waterwise

Brighton

Waterwise Schools Program

Waterwise Garden Centres Waterwise Business

Programg Program

In closing….

WA must be a world leader in adapting to a drying climateadapting to a drying climate.

Reliable water infrastructure is vital to WA’s economic prosperityvital to WA s economic prosperity.

We have plans in place for water d l t t tsource development to meet

Western Australia’s needs for the next 50 yearsnext 50 years

The solution is “Security through Diversity” and all working togetherDiversity and all working together