Water is the greatest gift of nature. The whole world is fast heading towards a water crisis. India in spite of being one of the wettest countries in the world is becoming a nation of acute water scarcity. The water related issues confronting the world as a whole and India in particular have been discussed in this book. The book covers a wide range of water related issues like water resources, availability, demand and supply status, reasons of water crisis and its impacts on ecology, food security, national economy and health, strategies and action plan for secured and safe water supply in future under 14 chapters. The focus is on water related issues from national perspective. Delhi being national capital of the country, a separate chapter on water has been included in the book. The author sincerely hopes that this book will be of immense use to researchers, planners, social activists, environmentalists, farmers, industrialists, domestic users and anyone who has concern about water and its importance.