This book reveals the assessment of physical parameters like color, solid, pH & microbial parameters like total Coliform and seacal coliform . It gives various methods for analysis of sewage water and how we prevent sewage water to mix with pure water. It concerned on the pollution control and the protection of the environmental quality. Monitoring of aqueous sample by various parameters from different site of sewage treatment plat to assess, monitor and to focus on the site which are main source responsible for the water pollution.