Sewage systems in buildings help get rid of waste, known as sewage disposal. Treatment of sewage involves removing contaminants through various processes. Proper sewage disposal leads to effective treatment, producing safe fluid waste and solid waste for disposal or reuse. Reusing sewage effluent for drinking water is possible with the right technology. Sewage and effluent can carry disease-causing microorganisms, so safe disposal is crucial for community health. Concerns about pollution and contamination of the environment have made sewage disposal a significant issue since the 1970s.