Lessons from Israel on recycling water to stem looming shortage
SEE ALSO :Sh3b water goes down the drain“Depleted water supplies will pose a risk to the US and global food markets which will result in higher prices around the world. This has begun to happen in Brazil. The ability by key countries to produce food and generate energy will transform the world as we know it today.” The US is also suffering from the problem especially in western states which have reached a tipping point which will affect people’s lifestyles and food prices. It is estimated the world’s middle-class population by 2020 will have hit 3.25 billion who will demand daily showers, swimming pools green lawns fresh vegetables, fruits and flowers, leading to higher water withdrawal. More energy will be required to power their cars. It is not all gloom, for Siegel suggests that the world turns to Israel for solutions where owing to the country’s positioning in the desert, surrounded by hostile neighbours has developed some solutions. The country, where every drop of water whether fresh, used, saline or from the sewer is never to be wasted and technologies have been developed for maximum utilisation. The world will have to adopt quickly to some of the smart solutions already being applied in Israel where recycled sewerage water is more appreciated than rain because it is more reliable and predictable. Some of the technologies which can help alleviate the water problem is not by digging dams as Kenya has been doing but by recycling water and using drip for irrigation as well as desalinating sea water. The scientists have come up with variety of crops such as wheat which have short stalk which will require less water while at the same time employing chips attached to drips will inform the farmer when the plant needs to be watered with precise drip delivered at its root to minimise loss. Cities around the world should also embrace digital metering and technology to detect leakages. And instead of directing raw sewerage to rivers, lakes and oceans, the author suggests that municipal authorities and county government invest in treatment plants. The sewage can be used to fight forest fires instead of firefighters throwing away fresh water.
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