Hostalric Wastewater Treatment Plant, la Batllòria, Catalunya, Spain

Hostalric wastewater treatment plant is located in la Batllòria, a settlement in the municipality of Fogars de la Selva, within the province of Barcelona, Catalunya, Spain. The plant serves a population of 4,432 and is part of the region's municipal wastewater infrastructure. The facility employs advanced treatment processes, ensuring a high level of pollutant removal before discharge. With a designed capacity of 6,492 m³/day and an actual discharge volume of 950.25 m³/day, the plant operates well below its capacity, indicating room for future growth. As a Spanish plant, it operates under the national transposition of the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires appropriate treatment for agglomerations of this size. The treated effluent is discharged into the local watershed, which ultimately drains into the Mediterranean Sea via the Tordera River basin. The plant's advanced treatment helps protect downstream aquatic ecosystems and supports the ecological health of the coastal environment.

The plant discharges into the Tordera River basin, which flows into the Mediterranean Sea near the Costa Brava. This coastal region supports diverse marine life and is ecologically sensitive. Advanced treatment reduces nutrient loads, helping to prevent eutrophication in the coastal zone and protect the area's biodiversity.