Great Finborough STW - Secondary Wastewater Treatment in Mid Suffolk, England

Great Finborough STW is a wastewater treatment plant located on Finborough Road in Great Finborough, Mid Suffolk, Suffolk, England. It serves a population of around 2,077, classifying it as a small agglomeration under UK regulations. The plant is situated inland, more than 10 km from the coast, and its treated effluent contributes to the local hydrological network. The plant provides secondary treatment, which is the standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for freshwater discharges from agglomerations of this size. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids. The plant's designed capacity is 2,077 population equivalent, and it discharges an average volume of 462.41 cubic meters per day. The treated wastewater from Great Finborough STW flows into local streams and rivers, eventually reaching the North Sea via the River Gipping or other tributaries of the Orwell estuary. This discharge supports the ecological health of the receiving waters, which are important for aquatic life and regional biodiversity. The plant plays a key role in protecting water quality in the Suffolk catchment area.

Great Finborough STW discharges into local watercourses that drain into the River Gipping and ultimately the Orwell estuary, which flows into the North Sea. The receiving waters support diverse aquatic ecosystems, including fish populations and macroinvertebrates. The plant's secondary treatment helps reduce nutrient loading and organic pollution, safeguarding downstream habitats from eutrophication and oxygen depletion.