ANWICK STW Wastewater Treatment Plant, North Kesteven, England

ANWICK STW is a wastewater treatment plant located on River Lane in Anwick, North Kesteven, Lincolnshire, England. It serves a population of around 25,635, placing it in the medium agglomeration category under UK regulations. The plant is situated inland, more than 50 km from the coast, and its discharge ultimately contributes to the River Witham catchment. Under the UK's implementation of the EU Urban Waste Water Treatment Directive (now retained as domestic law), plants serving populations between 10,000 and 100,000 are typically required to provide secondary treatment. The plant is expected to meet these standards. The designed capacity is reported as 1.00 (likely in megalitres per day or similar units), indicating a scale appropriate for its service population. The treated effluent from ANWICK STW discharges into local watercourses that feed into the River Witham, which flows through Lincolnshire and into The Wash, an ecologically important estuary and a designated Site of Special Scientific Interest. The plant plays a key role in protecting water quality in this sensitive downstream environment, supporting aquatic life and reducing nutrient loads.

ANWICK STW discharges into the River Witham catchment, which drains into The Wash, a large estuary on the east coast of England. The Wash supports diverse bird populations and marine life, making it ecologically sensitive. The plant's treatment helps control nutrient pollution that could otherwise contribute to eutrophication in the estuary.