ETE OURO VERDE Wastewater Treatment Plant, Manaus, Amazonas, Brazil

ETE OURO VERDE is a wastewater treatment plant located in Manaus, the capital of Amazonas state in Brazil's North Region. The plant serves a population of 1,733 people, making it a small-scale facility within the urban context of Manaus, a major city in the Amazon rainforest. The plant provides secondary treatment, which is the standard biological treatment required under Brazilian regulations (CONAMA resolutions) for municipal wastewater. This level of treatment removes organic matter and suspended solids, reducing the pollutant load before discharge. The facility treats an average of 207.85 m³ of wastewater per day, reflecting its small service area. The treated effluent is discharged into the local drainage network, which ultimately flows into the Amazon River basin. The Amazon River system is the largest river basin in the world, supporting immense biodiversity and critical ecosystem services. Proper treatment at plants like ETE OURO VERDE helps protect downstream water quality and aquatic life in this globally significant watershed.

The plant discharges into the Amazon River basin, the world's largest river system by discharge volume. This basin drains through the Amazon rainforest, a region of exceptional biodiversity and ecological importance. The treated effluent contributes to the water quality of local streams that feed into the Amazon River, which ultimately flows into the Atlantic Ocean. Protecting this watershed is critical for maintaining the health of aquatic ecosystems and the livelihoods of communities that depend on the river.