This book highlights the water quality of the Delhi stretch of River Yamuna. The sources of pollution, the subsequent quality degradation, the management of river water and steps towards better solution has been focused. The various usages of river water depending on its quality as per various standards is being discussed here.The book contain two parts. The first part deals with the quality and management of the Delhi stretch of River Yamuna and the expermiental procedures adopted to examine the water quality are dealt with in the second part in annexure. The simple and lucid language adopted by authors will make this book easy to understand.