Arid Australia Sips Seawater, but at a Cost

Government-subsidized tanks are used to capture rainwater for home in the Australian state of Queensland, part of the response to recent drought. (Edwina Pickles for The New York Times)

By NORIMITSU ONISHI
NYT

BRISBANE, Australia — In Australia, the world’s driest inhabited continent, early British explorers searching for a source of drinking water scoured the bone-dry interior for a fabled inland sea. One overeager believer even carted a whaleboat hundreds of miles from the coast, but found mostly desert inside. Today, Australians are turning in the opposite direction: the sea.

In one of the country’s biggest infrastructure projects in its history, Australia’s five largest cities are spending $13.2 billion on desalination plants capable of sucking millions of gallons of seawater from the surrounding oceans every day, removing the salt and yielding potable water. In two years, when the last plant is scheduled to be up and running, Australia’s major cities will draw up to 30 percent of their water from the sea.

The country is still recovering from its worst drought ever, a decade-long parching that the government says was deepened by climate change. With water shortages looming, other countries, including the United States and China, are also looking to the sea.

“We consider ourselves the canary in the coal mine for climate change-induced changes to water supply systems,” said Ross Young, executive director of the Water Services Association of Australia, an umbrella group of the country’s urban water utilities. He described the $13.2 billion as “the cost of adapting to climate change.”

(More here.)