This book is suitable for graduate and post graduate students, professors and research scientists. It describes chemistry as well as present-day scenario of irrigation water. After an introduction to essentials of irrigation water, the book covers the important aspects in a beautiful style. This book describes various quality parameters for irrigation water. The newest trends of research on irrigation water also can be smelt in this book. General methods and materials for conducting research work in the subject of irrigation water are also discussed in the book. Salinization is emerging as a big problem for irrigation. A special chapter about salinity is written in the book which delivers a good introduction to the problem and also describes the research work carried out by different researchers to solve the problem of salinity. This book reflects the span of contemporary research in Irrigation water and tries to fulfill the need of the primary and advanced learners.