How much water is needed to serve a cup of coffee? Some of you might simply say, "Surely one cup." But, based Water Footprint, the average amount of water needed to serve a cup of coffee is 140 liters.
How can that be? Water Footprint not only calculate the water used to brew the coffee, but also the total water needed to grow and maintain coffee, harvest, and process until the beans are ready to be milled, distributed, until finally served at the table.
The amount is quite surprising. But it could be a reflection that the use of water in agriculture, industry, and public consumption incalculable. Another example, serves a cup of tea requires 35 liters of water and 1 kg of rice present requires 3,000 liters of water.
To view and control water consumption, on February 28, 2011 and the Global Water Footprint Standard released a new record. Note that a standard was developed by the Water Footprint Network with 139 partners, scientists from the University of Twente, the Netherlands, as well as NGOs, corporations, and policymakers.
Global Water Footprint Standard provides consistency in measuring the amount of water used and its impact. Leaders Water Footprint Network, Jim Leape, said that the standard was made when companies in all sectors to realize the threat of water shortages that could affect the business.
According to the National Coordinator of WWF Indonesia Freshwater Program Agung Tri Rooswiadji, these standards are designed to reduce waste in water consumption. "The amount of water is very limited. If we are wasteful, it would reduce the need for other parties as well," he said.
Opinion, wasteful water consumption is now prevalent in the commercial industry. "The industry is not only manufacturing, but also others, such as agriculture and textiles. If such a direct liquid waste, it also reduces the amount of fresh water," he said.
Every industrial commodities he has different water needs. "The biggest example in coffee, palm oil, and cocoa," Tri said. Other sectors, such as the staple food, requires 3,000 liters of water to produce 1 kg of rice and 900 liters of water for 1 kg of corn flour.
Efficiency in water use is important to do, especially by industries. Inefficiency in the use of water resulting in water shortages could lead to conflict. "That never happened in 2001-2002 in Lombok. Farmers conflict due to water shortages," he said.
Tri said the industry could begin to implement Water Footprint Standard. In this standard there are facilities count the amount of water used in the form of Water Footprint Calculator that can help water efficiency program.
On the other hand, he also stressed the need for government policies. "As long as there is no policy regarding water efficiency," he said. This policy is expected to spur the industry to implement these standards.
With the Global Water Footprint Standard, industry players can monitor the use of water, particularly examining sectors wasteful water. Thus, water use efficiency measures were possible in supporting the preservation of water resources.
For individuals, the Global Water Footprint Standard could be a reference to measure the amount of water used in the food, wash clothes, and items purchased. Individuals may switch to products that require less water and water conservation notice the production process.
Efficient use of water is one way to conserve water resources, in addition to preventing the pollution of water sources. Currently, the global water quality showed a downward trend that requires radical measures to preserve it.