Wastewater treatment is a process that involves the removal of contaminants from wastewater before it is discharged back into the environment. This is done to prevent pollution and protect public health. There are a variety of methods used in wastewater treatment, including physical, chemical, and biological processes. Some common methods include sedimentation, filtration, disinfection, and biological treatment. Overall, wastewater treatment plays a crucial role in maintaining the quality of water sources and preserving the environment.