Abstract

Current water resources management practices in most developing countries result in unnecessarily high economic and environmental costs. The magnitude and consequences of such costs have spurred the emergence of a global consensus on principles for improving water resource management. India will face an acute scarcity of water by 2025, more than most nations in the developing world. There is compelling evidence that improved water resources policies can have major impacts. In a number of cases in developed and developing countries pricing and tariff combined with regulations have produced savings of 20% to 30% and more. Improving water management will require that developing countries address the major constraints that currently undermine the allocation and efficient use of their water resources. Experiences in both developing and developed countries, as presented in this article, showed that improved policies for conservation and reallocation can have major benefits. The concerned authorities should look for various alternatives such as rainwater harvesting, recycling of wastewater, reducing un-accounted water and other options. Rainwater harvesting should be made compulsory; wastewater reuse has to be made with dual water supply system for new layouts. As the suburbs in the city are increasing day by day, rainwater harvesting would be able to serve the city for much longer time.

Highlights

  • India will face an acute scarcity of water by 2025, more than most nations in the developing world

  • By 2015 Delhi ground water will completely go down and 50% of Delhi people will have no water if the same trend continues (Ramakrishnaiah, 2002)

  • The concerned authorities should look for various alternatives such as rainwater harvesting, recycling of wastewater, reducing unaccounted water and other options

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Summary

Introduction

India will face an acute scarcity of water by 2025, more than most nations in the developing world The number of districts which receives less than state average rainfall is 21 (Groundwater water resources status of Karnataka, India, 1994). It has experienced an unprecedented growth of 76% in population in the decade 1971-1981, and 39.4% during 1981-1991, 34.8% during 1991-2001, 48% during 2001-2011. Considering an area of 800 square kilometers of Bangalore, the amount of fresh water received by way of rainfall precipitation is estimated as follows. For this purpose, the average yearly rainfall precipitation of 978mm is considered. Be met from the water received by way of rainfall will be 500,415 ML which is 10% more than the total runoff available from a land area of 800 km

Water Conservation
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