lmagine going to get a drink of water and discovering that the faucet is dry or jumping into the shower to cool off on a steamy hot day and discovering that there's no water...Most of us simply take water for granted.We there's plenty of it-in oceans,lakes,rivers,and streams.But this is not the case The water we are using now is the very same water the the dinosaurs used millions of years ago.lt is simply recycled over and over again.There will never be any more water on Earth than there is now.
Most of the water on our planet(97%)is salt water stored in oceans.The remaining 3 percent is freshwater-and most of that is looked up in ice caps and glaciers.ln.fact,less than1 percent
of the planet's water is usable freshwater.lt's alarming that at the projected rate of population growth,humanity will up more than70 percent of all accessible freshwater by 2025.
Water is essential to people in more ways than we might think.We need water for cooking,bathing,transportation,and recreation.We eat aquatic plants and fish.We use water to irrigate our crops,to produce hydroelectric power,and to manufacture products.Water is indispensable for human hydroelectric power,and to manufacture products.Water is indispensable for human heath and well-being.People can live for two months without food,but will die in less than a week without water.
One of the solutions to the problem of water conservation is to recycle Wastewater.When you flush the Stockholm,school treats the wastewater.
in a greenhouse, where it is then used
to provide water to plants and fish in
an integrated cultivation system.ln Lima, Peru,Ponds full of algae and other small organisms clean up the wastewater, After 20 days,it is safe for reuse. Currently many factories, hotel chains,and apartment buildings around the world are installing water recycling systems.