Bom Sucesso Wastewater Treatment Plant, Figueira da Foz, Portugal

Bom Sucesso is a municipal wastewater treatment plant located in Figueira da Foz, Coimbra District, Portugal. It serves a population of approximately 2,300 people, classifying it as a small agglomeration under EU regulations. The plant is situated inland but within 50 km of the Atlantic coast, reflecting the region's coastal influence. The plant provides secondary treatment, which is the minimum standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for freshwater discharges from agglomerations of this size. With a designed capacity of 2,332 m³/day and an average daily flow of 383.48 m³/day, the plant operates well below its capacity, indicating room for future growth or seasonal variability. The treated effluent is discharged into a local watercourse that ultimately drains into the Atlantic Ocean near Figueira da Foz. The downstream environment includes the Mondego River estuary, a ecologically important area supporting diverse aquatic life and migratory bird species. The plant's operation helps protect this coastal ecosystem from untreated wastewater pollution.

The plant discharges into a tributary of the Mondego River, which flows into the Atlantic Ocean at Figueira da Foz. The Mondego estuary is a vital habitat for fish, birds, and other wildlife, supporting both commercial fisheries and recreational activities. As a secondary treatment facility, Bom Sucesso reduces organic pollutants and suspended solids, helping to maintain water quality in this sensitive coastal environment.