COLLINGHAM STW - Secondary Wastewater Treatment Plant in Newark and Sherwood, England

COLLINGHAM STW is a wastewater treatment plant located in Collingham, Newark and Sherwood, Nottinghamshire, England. It serves a population of around 2,811, classifying it as a small agglomeration under UK and EU regulatory frameworks. The plant is situated in the East Midlands, an inland region with a temperate climate. The plant provides secondary treatment, which is the standard biological treatment required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for freshwater discharges from agglomerations of this size. Secondary treatment typically involves biological oxidation and sedimentation to reduce organic matter and suspended solids. The plant has a designed capacity of 3,500 cubic meters per day, with a reported discharge volume of 625.83 cubic meters per day, indicating operational headroom. The treated effluent from COLLINGHAM STW is discharged into local watercourses that ultimately drain into the River Trent, a major river in the East Midlands. The River Trent flows through Nottinghamshire and into the Humber Estuary, which is an ecologically important area supporting diverse aquatic life and migratory bird populations. The plant's operations contribute to protecting water quality in the Trent catchment, which is used for recreation, agriculture, and drinking water abstraction downstream.

COLLINGHAM STW discharges into local streams that feed into the River Trent, which flows eastward through Nottinghamshire to the Humber Estuary and the North Sea. The River Trent catchment supports a variety of fish species, including salmon and coarse fish, and the estuary is a key site for overwintering waterbirds. The plant's secondary treatment helps reduce nutrient and organic loads, mitigating eutrophication risks in the downstream freshwater and estuarine environments.