Wastewater management in cities around the world in general and in Sub-Sahara Africa poses enormous challenges because of the rate of growth of populations and increasing industrial development. This readily readable book captures the nature of diurnal and seasonal variations of bacterial content of wastewater. The book is written against the background of Sustainable Millennium Development Goals. It presents health care issues relating to water scarce regions where major urban centers obtain vegetable supplies from areas where irrigation is done using contaminated surface water which renders food unsafe. Types of bacteria found in the wastewater and subsequent effluent in the river lays emphasis on need for efficient treatment plants. City Planners and Water Engineers in sub-Sahara Africa have a textbook which contains information on considerations when designing drainage systems and water supply where wastewater piping and channels cross. Readership of the book targets: microbiologists, epidemiologists, public health officers, researchers, water engineers, and city planners.