Krizevci Wastewater Treatment Plant, Grad Križevci, Croatia

The Krizevci wastewater treatment plant is located in Grad Križevci, Koprivničko-križevačka županija, Croatia. It serves the local population with a designed capacity of 20,300 cubic meters per day, positioning it as a medium-scale facility in the region. The plant operates under Croatia's implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC). As a facility providing primary treatment, it is expected to meet the directive's requirements for agglomerations of this size, with secondary treatment typically mandated for inland areas unless a less sensitive area designation applies. The treated effluent is discharged into local watercourses that drain into the Drava River basin, ultimately reaching the Danube River and the Black Sea. The plant plays a key role in protecting the region's water quality and supporting the ecological health of downstream aquatic environments.

The plant discharges into the Drava River basin, a tributary of the Danube, which flows into the Black Sea. This watershed supports diverse aquatic life and provides important ecosystem services. The region's agricultural and urban areas rely on effective wastewater treatment to prevent nutrient loading and maintain water quality in downstream rivers and the Black Sea.