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UWWTP_METLIKA serves the town of Metlika, Croatia, treating wastewater for approximately 3,680 residents. The plant discharges into the local water system, contributing to the broader Sava River basin.
UWWTP Rogaška Slatina serves approximately 19,698 people in Rogaška Slatina, Croatia. The plant operates under EU Urban Waste Water Treatment Directive 91/271/EEC, which mandates secondary treatment for agglomerations of this scale.