PLEA Network

6 October 2015, The Guardian, Perth’s water worries: how one of the driest cities is fighting climate change, From locating leaky pipes with acoustic listening to reusing wastewater, Western Australia’s capital is using technology to bridge the water gap. Perth, the capital of Western Australia, is not only one of the most isolated cities in the world, it is also becoming one of the driest in Australia. Since the gold rush of the 1890s, impressive engineering schemes have transported enough water to make Perth a city of lush lawns and eye-catching flowerbeds, to the surprise of some visitors. But a drop in average annual rainfall in recent years, along with some truly dire climate change projections, have required government and business to focus on water security. Australia’s Climate Council estimates that water flow from rainfall into Perth’s dams has slumped by 80% since the 1970s, with precipitation in the south-west corner of Australia forecast to drop by up to 40% by the end of the century. Coping with climate change Last year, Perth’s dams received just 72.4bn litres of water – far less than the 300bn currently demanded by Perth’s two million-strong population. A huge desalination facility, completed in 2006, has helped make up this shortfall, but behavioural and technological change is also bridging the gap. Read More here