Water Prices Rising Worldwide

Rising water costs could lead to better water efficiency measures.

| March 7, 2007

The price of water is increasing — sometimes dramatically — throughout the world. Over the past five years, municipal water rates have increased by an average of 27 percent in the United States, 32 percent in the United Kingdom, 45 percent in Australia, 50 percent in South Africa, and 58 percent in Canada. In Tunisia, the price of irrigation water increased fourfold over a decade.

A recent survey of 14 countries indicates that average municipal water prices range from 66¢ per cubic meter in the United States up to $2.25 in Denmark and Germany. Yet consumers rarely pay the actual cost of water. In fact, many governments practically (and sometimes literally) give water away for nothing.

The average American household consumes about 480 cubic meters (127,400 gallons) of water during a year. Homeowners in Washington, DC, pay about $350 (72¢ per cubic meter) for that amount.  Buying that same amount of water from a vendor in the slums of Guatemala City would cost more than $1,700.

The price people pay for water is largely determined by three factors: the cost of transport from its source to the user, total demand for the water, and price subsidies. Treatment to remove contaminants also can add to the cost.

The cost of transporting water is determined largely by how far it has to be carried and how high it has to be lifted. Growing cities and towns may have to go hundreds of kilometers to find the water needed to satisfy their increasing thirst. California cities have long imported water from hundreds of kilometers away. And China is constructing three canals that are 1,156 kilometers, 1,267 kilometers, and 260 kilometers long to transfer water from the Yangtze River to Beijing and other rapidly growing areas in the northern provinces.

Pumping water out of the ground or over land to higher elevations is energy-intensive. Pumping 480 cubic meters of water a height of 100 meters requires some 200 kilowatt-hours of electricity. At a price of 10¢ per kilowatt-hour, the cost is $20 — not including the cost of the pump, the well, and the piping. One hundred meters is not an unusual lift for wells tapping falling supplies of groundwater. In Beijing and other areas in northern China, for instance, lifts of 1,000 meters are sometimes required.

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