ETE Columbia Wastewater Treatment Plant, Colatina, Espirito Santo

ETE Columbia is a wastewater treatment plant located in the Columbia neighborhood of Colatina, in the state of Espirito Santo, Brazil. The plant serves a small population of around 1,319 residents, reflecting its role in a localized community within the broader Colatina region. The plant provides secondary treatment, which is the standard biological treatment stage that removes organic matter and suspended solids. Under Brazil's national environmental regulations, operated through CONAMA resolutions and state-level permits, secondary treatment is typical for smaller communities. The plant discharges approximately 114.36 units of treated wastewater daily. The treated effluent from ETE Columbia ultimately drains into the Doce River basin, one of the most important river systems in southeastern Brazil. The Doce River flows eastward to the Atlantic Ocean, supporting diverse aquatic ecosystems and providing water for agriculture and industry. The plant's operation helps protect downstream water quality in this ecologically significant watershed.

ETE Columbia discharges into the Doce River basin, which flows through Espirito Santo and Minas Gerais before reaching the Atlantic Ocean. The Doce River supports a rich variety of aquatic life and is an important water source for local communities. The plant's secondary treatment helps reduce organic pollution, contributing to the ecological health of the river and its downstream environments.