ALFRETON STW - Wastewater Treatment Plant in North East Derbyshire, England

ALFRETON STW is a wastewater treatment plant located in North East Derbyshire, Derbyshire, England. It serves a population of around 52,000, classifying it as a medium-sized agglomeration under UK and EU standards. The plant is situated inland, away from coastal areas, and its operations are part of the regional water infrastructure managed by a water utility. As a plant serving over 50,000 people, ALFRETON STW is expected to meet secondary treatment standards under the Urban Waste Water Treatment Directive (UWWTD), which is transposed into UK law. The directive requires such agglomerations to have appropriate treatment to protect receiving waters. The plant's scale suggests it likely incorporates biological treatment stages to reduce organic matter and nutrients. The treated effluent from ALFRETON STW discharges into local watercourses that ultimately drain into the North Sea via the River Trent and Humber Estuary. The plant plays a key role in protecting the water quality of these downstream environments, which support diverse aquatic life and are important for regional ecology and water resources.

ALFRETON STW discharges into local rivers that flow into the River Trent, a major tributary of the Humber Estuary, which empties into the North Sea. The Humber Estuary is an ecologically sensitive area that supports diverse bird populations and fish species, including migratory salmonids. The plant's treatment performance is critical to maintaining water quality in this downstream chain, particularly for nutrient and oxygen levels.