A WWTP processes sewage, or wastewater, to remove pollutants and solids from it. It also breaks down organic materials to increase oxygen content in the treated water. The plant uses three operations – primary treatment, secondary treatment, and sludge treatment – to clean wastewater. The wastewater is collected from a network of sewers that connects to homes, schools, industry and businesses. The solids are transported to the WWTP’s collection tanks during the treatment process.