Nettleham STW - Wastewater Treatment Plant in West Lindsey, Lincolnshire

Nettleham STW (Sewage Treatment Works) is located on Sudbrooke Lane in the civil parish of Nettleham, near the town of Sudbrooke in West Lindsey, Lincolnshire, England. The plant serves a population of approximately 4,668, classifying it as a small agglomeration under UK water industry standards. As a small-scale facility, Nettleham STW is subject to the Urban Waste Water Treatment (England and Wales) Regulations 1994, which transpose the EU Urban Waste Water Treatment Directive (91/271/EEC). For agglomerations of this size, secondary treatment is typically required unless the receiving water is designated as a sensitive area, which would necessitate more advanced treatment. The plant's designed capacity is 1.00 (likely in megalitres per day or similar units), indicating a modest infrastructure footprint. The treated effluent from Nettleham STW is discharged into local watercourses that ultimately drain into the River Witham, a major river in Lincolnshire. The River Witham flows through Lincoln and into The Wash, a large estuary and bay on the North Sea coast. The Wash supports diverse aquatic life and is an important area for migratory birds, making the quality of discharges from upstream treatment plants critical for maintaining ecological health.

Nettleham STW discharges into local streams that feed the River Witham, which flows approximately 80 km southeast to The Wash on the North Sea coast. The Wash is a large estuary and bay of international ecological importance, supporting diverse bird populations and marine life. The plant's location in the Lincolnshire countryside means its effluent contributes to the water quality of this sensitive downstream environment, where nutrient loading and pollution control are key concerns.