This document provides an overview of a training course on waste water sampling and analysis. It discusses different types of pollutants found in domestic and industrial wastewater, including organic compounds that consume oxygen during biological breakdown. Pathogens that can be transmitted through wastewater are described, such as bacteria (e.g. fecal coliform), parasites (e.g. Giardia lamblia), and helminths (parasitic worm eggs). Common waterborne diseases are listed including typhoid, hepatitis A, and amebiasis. Details are given about indicator bacteria tested for in wastewater analysis such as fecal coliform and E. coli, which indicate fecal contamination.