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Of all the natural resources available for mankind, water is the most prominent, life supporting and life sustaining resource. Water pollution in the environment as a cause of various anthropogenic processes, has put a question on the potability of the water available from various natural and municipal sources making it unsafe for drinking. Various tools and techniques are being used for water purification, but these techniques are out of the reach of common people, due to their incurred cost. In order to get pure drinking water for each and every person, herbs can play a tremendous role in providing cost-effective tool for water purification. The present book provides platform for understanding the analytical properties, methods of testing various aspects of water quality as well as different methods of water purification. The compilation will be useful for students, researchers, teachers and persons working in waterworks. Probable questions of each chapter will be helpful in understanding and assessing the knowledge.