S.C. Rangwala is a renowned engineer who has made significant contributions to the field of water supply and sanitary engineering. His book, available in PDF format, is a comprehensive resource that covers various aspects of water supply and sanitary engineering. The book provides detailed information on topics such as water sources, treatment, and distribution, as well as sewage collection, treatment, and disposal. Rangwala's work emphasizes the importance of proper planning, design, and operation of water supply and sanitary systems to ensure public health and environmental protection.