ETE RIO PARANA Wastewater Treatment Plant, Porto Rico, Paraná, Brazil

ETE RIO PARANA is a wastewater treatment plant located in the Condomínio Residencial Águas de Porto Rico, serving the small community of Porto Rico in Paraná, Brazil. The plant provides secondary treatment for a population of 662 residents, contributing to local sanitation infrastructure. As a secondary treatment facility, ETE RIO PARANA meets the standard level of treatment required for municipal wastewater in Brazil. The plant discharges 151.20 m³/day of treated effluent. Brazilian regulations, such as CONAMA Resolution 430/2011, set effluent quality standards for treatment plants of this scale, ensuring environmental protection. The plant is situated inland, more than 10 km from the coast, and its treated effluent likely drains into the Paraná River basin, which flows into the Río de la Plata estuary. This water body supports diverse aquatic life and is important for regional water supply and agriculture.

The plant discharges into the Paraná River basin, a major South American watershed that flows through Brazil, Paraguay, and Argentina before reaching the Río de la Plata estuary. The downstream environment supports diverse aquatic ecosystems, including fish species and riparian habitats. The region's subtropical climate and agricultural activities make water quality management critical for both ecological health and human use.