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Showing posts with the label Urban Water Supply

How to deplete cities of fresh water and pollute it too– A Case Study Of Jaipur

The lake at Nainital, a town in the Himalayas W ith a rising population on our planet, particularly in cities, ensuring fresh water supplies of a good quality is an issue facing many cities around the world. Cities derive their water from surface sources such as lakes and rivers or from underground sources. It seems that in India two thirds of fresh water requirements are met by ground water. With an increase in human activity both sources of water are getting depleted besides getting polluted. Surface water is polluted if waste water from cities and industries is dumped directly into natural lakes and rivers without treatment. Such pollution can be reduced if  water is first directed/dumped into artificial canals and lakes instead. From here it purifies slowly by bacterial action and the water that seeps into ground is purified by filtration through soil. However some pollutants such as nitrates from fertilizers that dissolve in water can reach ground reservoirs pollu...

Some FAQS about city water supply that must be known

Q. Will our cities become short of water with expansion? As cities expand a greater pressure is being put on water resources required to meet the needs of urban populations in cities around the world. There is a need to maintain adequate water supply as well as the quality of the water supplied so that health of urban dwellers does not deteriorate. It must be remembered that water for the most part is not destroyed by use. With proper recycling and management, urban dwellers need not suffer water shortage. This point needs to be highlighted before we proceed, With proper management and recycling, urban areas can avoid shortages and poor quality of water Q. What is the proper and inexpensive way to recycle water? There is a proper way to recycle water and an improper way. The proper way mimics natural processes through which water has been recycled on land for millions of year, which is collecting it in ponds where an initial purification takes place by aerobic and anaero...

Dangers of improper rain water harvesting

Nainital Lake O ver the last century, human population has grown and along with it there has been a tremendous growth in cities. A direct consequence of this growth is that urban populations in many cities across the world are facing water shortages. Along with sunshine and fresh air, water is a primary requirement for life and any shortage in its supply spells a diminished quality of life. There are primarily three sources of water available to human populations – rain, surface water such as lakes and rivers and lastly ground water. The source of all three is rain that rises from the abundant oceans on the planet. However with increasing use and population growth, both surface and ground water is not only getting depleted but also getting polluted. Whenever water shortages occur there is often a cry to conserve water. One basic point is forgotten in this cry – WATER CANNOT BE DESTROYED – by most natural processes. It requires chemical and other possesses such as electrol...