Curtin University is a trademark of Curtin University of Technology CRICOS Provider Code 00301J CURTIN UNI WATER STRATEGY 1. THE GLOBAL CHALLENGES 2013

Curtin University is a trademark of Curtin University of Technology CRICOS Provider Code 00301J What are we seeing changing ? Regional scale Real and observed trends Long term

Curtin University is a trademark of Curtin University of Technology CRICOS Provider Code 00301J PERTH AIRPORT - RAINFALL Running Average Annual Average CURRENT TRENDS

Curtin University is a trademark of Curtin University of Technology CRICOS Provider Code 00301J PERTH AIRPORT - TEMPERATURE Number of days over 35°C CURRENT TRENDS

Curtin University is a trademark of Curtin University of Technology CRICOS Provider Code 00301J FUTURE TRENDS

Curtin University is a trademark of Curtin University of Technology CRICOS Provider Code 00301J

Curtin University is a trademark of Curtin University of Technology CRICOS Provider Code 00301J % CHANGE – MEAN ANNUAL RAINFALL 15 different climate change models 13 are predicting lower rainfall by 2030

Curtin University is a trademark of Curtin University of Technology CRICOS Provider Code 00301J FUTURE TRENDS – PERTH AIRPORT

Curtin University is a trademark of Curtin University of Technology CRICOS Provider Code 00301J CHANGE – MEAN ANNUAL TEMPERATURE 15 different climate change models 15 are forecasting higher mean annual temperature by 2030

Curtin University is a trademark of Curtin University of Technology CRICOS Provider Code 00301J WEATHER FORECAST TO 2030 DRIER WINTERS HOTTER LONGER & MORE FREQUENT HEAT WAVES MORE EVAPORATION LESS STORMWATER LESS SUPERFICIAL GROUNDWATER

Curtin University is a trademark of Curtin University of Technology CRICOS Provider Code 00301J IMPACTS ON THE UNIVERSITY DRIER WINTERS LESS STORMWATER MORE EVAPORATION HOTTER LONGER & MORE FREQUENT HEAT WAVES AIR CONDITIONING LOAD PROVISION OF SHADE FIRE RISK OUTDOOR WORK TREE DEATHS LESS SUPERFICIAL GROUNDWATER LESS RAINFALL STORAGE JF LAKE DAMPLAND SHORTER GROWING SEASON DEEPER GROUNDWATER/QUALITY TREE DEATHS

Curtin University is a trademark of Curtin University of Technology CRICOS Provider Code 00301J Drought proofing Perth CURRENT SOURCES WATER CORP. 10 YEAR PLAN

Curtin University is a trademark of Curtin University of Technology CRICOS Provider Code 00301J Gaps between groundwater yields and demands Negative values are deficit

Curtin University is a trademark of Curtin University of Technology CRICOS Provider Code 00301J WATER CORPORATION – 10 YEAR PLAN Access deep groundwater aquifers Reduce the use of superficial aquifers Clear pines off Gnangara aquifer Replenish deep aquifer with recycled wastewater Expand desalinisation Increasing wastewater recycling for irrigation

Curtin University is a trademark of Curtin University of Technology CRICOS Provider Code 00301J WATER USES IN PERTH

Curtin University is a trademark of Curtin University of Technology CRICOS Provider Code 00301J WA GOVT POLICIES TO REDUCE WATER USE Daytime watering ban from bores – since 2002 Winter ban on irrigation Minimum water use standards WEMP for > 20 Ml users Increase in scheme water costs Metering of non-residential groundwater bores Licence for non-residential groundwater abstraction

Curtin University is a trademark of Curtin University of Technology CRICOS Provider Code 00301J INFLUENCES ON WA WATER MARKETS Demographics & social shifts Higher water resource demands Demand may exceed supply Reputational risks Increased pressure for more visibility of water saving infrastructure; water use targets State economical dynamics Increased water prices reflect true value and cost of supply & infrastructure Political & regulatory priorities Maintain availability and quality Maintain central supplier (?) Increased reporting Entrenched irrigation bans Policy changes on wastewater recycling Planning over catchments & groundwater Innovation & technological advances High efficiency technologies Climate modeling Desalination Wastewater recycling Groundwater replenishment Deep aquifer abstraction