ETE COHAB SAPUCAIA DO SUL - Secondary Wastewater Treatment Plant in Sapucaia do Sul, Brazil

ETE COHAB SAPUCAIA DO SUL is a municipal wastewater treatment plant located in Sapucaia do Sul, a city in the metropolitan region of Porto Alegre, Rio Grande do Sul, Brazil. The plant serves a population of approximately 87,209 people, placing it in the medium-to-large agglomeration category for Brazilian wastewater infrastructure. The plant provides secondary treatment, which is the standard level required under Brazilian regulations (CONAMA resolutions) for most urban wastewater discharges. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids. The plant discharges a reported volume of 656. The treated effluent from the plant ultimately flows into the local watershed, which drains into the Guaíba River and then into the Lagoa dos Patos, a large coastal lagoon system in southern Brazil. This water body supports diverse aquatic life and is important for regional fisheries and recreation. The plant's operation helps protect downstream water quality in this ecologically sensitive lagoon system.

The plant discharges into the local drainage network that feeds the Guaíba River, which flows into the Lagoa dos Patos, one of the largest coastal lagoons in South America. This lagoon system supports rich biodiversity, including migratory birds and fish species, and is a critical resource for local communities. The secondary treatment provided by the plant reduces organic pollution, helping to maintain water quality in this important downstream environment.