How Does Sewage and Wastewater Contribute to Pollution?

Sewage and wastewater contribute to pollution in numerous ways. When untreated or inadequately treated sewage is discharged into water bodies, it can lead to the contamination of drinking water sources, the destruction of aquatic ecosystems, and the spread of waterborne diseases. Moreover, the high content of nutrients such as nitrogen and phosphorus can cause eutrophication, leading to algal blooms and oxygen depletion in water bodies.