ABSTRACT
Microorganisms are significant in water and wastewater because of their roles in disease transmission, and they are the primary agents of biological treatment. Thus, water and wastewater practitioners must have considerable knowledge of the microbiological characteristics of water and wastewater. Simply put, waterworks operators cannot fully comprehend the principles of effective water treatment without knowing the fundamental factors concerning microorganisms and their relationships to one another, their effect on the treatment process, and their impact on consumers, animals, and the environment.
