Pharmaceutical Microbiology encompasses those aspects of Microbiology which impact directly upon the development, production and use of pharmaceutical compounds. It is a part of industrial microbiology, which is concerned with the production of various drugs for various diseases. All drugs must undergo microbiology testing for the detection of contamination especially before packing. The purpose of this book is to understand the various issues that relate to the establishment, maintenance and control of the microbiological quality of the controlled environment. In this book, I have compiled the various experiments which are performed to check the microbial contamination of pharmaceutical products, pharmaceutical water and environment monitoring of the plant.