ETE PARIQUERA ACU Wastewater Treatment Plant, Pariquera-Acu, Sao Paulo

ETE PARIQUERA ACU is a wastewater treatment plant located in Pariquera-Acu, a municipality in the state of Sao Paulo, Brazil. The plant serves a population of approximately 10,702 people, classifying it as a small to medium-sized facility within the region's sanitation infrastructure. As a Brazilian wastewater facility, it operates under the national regulatory framework established by the Ministry of Cities and state environmental agencies such as CETESB in Sao Paulo. For agglomerations of this scale, secondary treatment is typically required to meet discharge standards. The plant's treated effluent likely discharges into local watercourses that drain into the Ribeira de Iguape River basin, an ecologically significant region in southeastern Brazil. The area is known for its Atlantic Forest remnants and supports diverse aquatic life. Proper treatment is essential to protect downstream water quality and the sensitive coastal ecosystems of the Iguape-Cananéia-Paranaguá estuary system.

The plant is located in the Ribeira de Iguape River basin, which flows into the Atlantic Ocean near the Iguape-Cananéia-Paranaguá estuary, a complex and ecologically sensitive coastal system. This region supports mangroves, wetlands, and diverse aquatic species, including migratory fish. Effective wastewater treatment is critical to prevent nutrient loading and contamination that could harm these downstream environments.