The aim of this book is to address, Hand book of water quality assessment in reference to environmental significance; the book presents an international, multidisciplinary, ready-reference source to educational institutions and individuals practicing in the area of pollution control. This book provides comprehensive information on water. This book is based on recent views, ideas and contributions of some of the world's leading scientists. The book is intended as a useful reference for the civil engineers, governmental agencies academicians, legislators, decision makers, economists, industrial managers, consultants, students and to those who wish to learn more about water quality.