The composition of municipal wastewater can vary considerably, reflecting the range of contaminants released by various domestic, industrial, commercial and institutional sources. There are growing concerns about emerging pollutants in domestic wastewater which include detergents, microplastics and medications that even at low concentrations may have long-term impacts (United Nations Educational, Scientific and Cultural Organization World Water Assessment Programme [UNWWAP] 2017). The figure shows the sources and description of wastewater. The frequency indicates the rate of occurrence of the components.
From collection: Sanitation and Wastewater Atlas of Africa - Ecosystems