DP09800901_CASALMAIOCCO Wastewater Treatment Plant, Casalmaiocco, Lombardy

DP09800901_CASALMAIOCCO is an advanced wastewater treatment plant located in Casalmaiocco, a municipality in the province of Lodi, Lombardy, Italy. The plant serves a population of 2,632 and has a designed capacity of 5,300 m³/day, with a discharge volume of 521.04 m³/day. It operates under Italy's implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires appropriate treatment for small agglomerations. The plant provides advanced treatment, which goes beyond secondary treatment to remove nutrients such as nitrogen and phosphorus. This level of treatment is typical for plants discharging into sensitive areas or upstream of water bodies used for drinking water abstraction. The plant's capacity utilization is low relative to its design, indicating potential for future growth or seasonal variability. The treated effluent is discharged into local watercourses that eventually drain into the Po River basin, one of Italy's most significant watersheds. The Po River flows eastward into the Adriatic Sea, supporting extensive agricultural irrigation and diverse aquatic ecosystems. The advanced treatment helps protect downstream water quality and ecological health.

The plant discharges into local waterways that are part of the Po River basin. The Po River is the longest river in Italy, flowing through the Po Valley and emptying into the Adriatic Sea. This basin supports intensive agriculture and is ecologically sensitive due to nutrient loading. Advanced treatment at this plant reduces nitrogen and phosphorus inputs, helping to mitigate eutrophication risks in the Adriatic Sea.