ETE CANAS Wastewater Treatment Plant, Canas, São Paulo, Brazil

ETE CANAS is a municipal wastewater treatment plant located in Canas, a city in the state of São Paulo, Brazil. The plant serves a population of about 3,277 residents, classifying it as a small-scale facility within the region's sanitation infrastructure. The plant provides secondary treatment, which is the standard biological process required for most municipal wastewater in Brazil under national regulations. Secondary treatment typically involves biological degradation of organic matter followed by sedimentation. The plant discharges an average of 386.92 cubic meters of treated wastewater per day. The treated effluent from ETE CANAS is discharged into local water bodies that ultimately drain into the Paraíba do Sul River basin, a major river system in southeastern Brazil. This river is critical for water supply, agriculture, and ecosystem health in the region. Proper treatment at ETE CANAS helps protect downstream water quality and aquatic habitats.

The plant's discharge enters the Paraíba do Sul River basin, which flows through the Vale do Paraíba region and eventually reaches the Atlantic Ocean near Campos dos Goytacazes. This watershed supports diverse aquatic life and provides water for millions of people. Secondary treatment reduces organic pollutants and suspended solids, helping to maintain the ecological balance of the river system.