DP01604401_CALCIO Wastewater Treatment Plant, Calcio, Lombardia

DP01604401_CALCIO is a municipal wastewater treatment plant located in Calcio, a town in the province of Bergamo, Lombardia, Italy. The plant serves a population of approximately 5,965 residents, classifying it as a small agglomeration under Italian and EU regulations. It is situated inland, away from coastal areas, and its operations are part of the regional wastewater infrastructure managed by local authorities. As a plant serving fewer than 10,000 people, it falls under the EU Urban Waste Water Treatment Directive (91/271/EEC) requirements for appropriate treatment. Italian plants of this scale typically employ secondary biological treatment to meet discharge standards. It is assumed to operate under the regulatory framework of the Lombardia region. The plant discharges treated effluent into the Oglio River, a major tributary of the Po River, which flows into the Adriatic Sea. The Oglio River supports diverse aquatic life and is an important water resource for agriculture and ecosystems in the Po Valley. Proper treatment at this plant helps protect water quality in the downstream river system and the Adriatic coastal environment.

The plant discharges into the Oglio River, which flows through the Po Valley and joins the Po River before reaching the Adriatic Sea. The Oglio River basin supports agricultural irrigation and diverse freshwater habitats, including fish species such as barbel and chub. Effective wastewater treatment is essential to prevent nutrient loading and maintain ecological balance in this sensitive riverine and coastal ecosystem.