The book, Assessment of water quality by Principal component analysis; presents an international, multidisciplinary, ready-reference source to educational institutions and individuals practicing in the area of water pollution control. This book provides comprehensive information on PCA. 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 assessment.