ETE Umuarama - Secondary Wastewater Treatment Plant in Cuiabá, Mato Grosso, Brazil

ETE Umuarama is a wastewater treatment plant located in the Primeiro de Março neighborhood of Cuiabá, the capital of Mato Grosso state in Brazil's Centro-Oeste region. The plant serves a small population of 372 residents, reflecting its role in a localized community within the broader Cuiabá metropolitan area. The plant provides secondary treatment, which is the standard biological process for removing organic matter and suspended solids. Under Brazil's national environmental regulations (CONAMA resolutions and state-level licensing), secondary treatment is typically required for municipal wastewater to protect water quality. The plant's discharge volume is 259.20 cubic meters per day, indicating a modest operational scale consistent with the small population served. The treated effluent from ETE Umuarama flows into the Cuiabá River basin, which is part of the larger Paraguay River watershed. This river system drains into the Pantanal, one of the world's largest tropical wetlands and a critical ecosystem for biodiversity. The plant's secondary treatment helps reduce nutrient and organic loads, supporting the ecological health of the downstream aquatic environment.

The plant discharges into the Cuiabá River basin, which flows into the Paraguay River and ultimately the Pantanal wetland, a vast floodplain ecosystem. The Pantanal supports diverse aquatic life, including fish, caiman, and migratory birds, and is sensitive to nutrient pollution. Secondary treatment at this plant helps mitigate eutrophication risks in the downstream river network.