NAVENBY STW - Secondary Wastewater Treatment Plant in Navenby, Lincolnshire

NAVENBY STW is a wastewater treatment works located on Church Lane in Navenby, within the North Kesteven district of Lincolnshire, England. The plant serves a population of around 2,967, classifying it as a small agglomeration under UK and EU regulatory frameworks. It is situated inland, away from coastal areas, and operates as part of the region's municipal wastewater infrastructure. As a secondary treatment facility, NAVENBY STW provides biological treatment to remove organic matter and suspended solids, meeting the standards required by the Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. The plant has a designed capacity of 2,967 population equivalent, with a reported discharge volume of 660.56 cubic meters per day, indicating efficient operation within its capacity. The treated effluent from NAVENBY STW is discharged into local watercourses that ultimately drain into the River Witham or its tributaries, contributing to the North Sea via The Wash. This watershed supports diverse aquatic life and is important for regional biodiversity, including migratory fish and wetland bird species. The plant's operation helps protect these downstream ecosystems from nutrient pollution and organic loading.

NAVENBY STW discharges into local streams that feed into the River Witham, which flows through Lincolnshire and empties into The Wash, a large estuary and embayment of the North Sea. The Wash is an ecologically sensitive area supporting important bird populations, seal colonies, and diverse marine life. The plant's secondary treatment reduces organic pollutants and nutrients, helping to maintain water quality in this downstream environment.