A wastewater treatment plant is a facility designed to remove contaminants from used water, known as wastewater. This process helps protect the environment and public health by treating water from homes, industries, and businesses before it is released back into rivers, lakes, or oceans. The treatment process typically involves several stages, including screening, sedimentation, and filtration. In these stages, solids are removed, harmful bacteria are eliminated, and the water is purified. After treatment, the clean water can be safely returned to the ecosystem or reused for irrigation and other purposes.