Silverstone STW - Towcester, England | Secondary Wastewater Treatment Plant

Silverstone STW (Sewage Treatment Works) is a municipal wastewater facility located in Towcester, West Northamptonshire, England. The plant serves a population equivalent of 2,791, placing it in the small agglomeration category under UK and EU regulatory frameworks. The plant provides secondary treatment, which is the standard biological treatment stage required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for inland freshwater discharges from agglomerations of this size. The designed capacity of 2,791 population equivalent aligns with the current served population, indicating the plant operates at full capacity. Treated effluent from Silverstone STW is discharged into local streams that feed into the River Tove, a tributary of the River Great Ouse. The Great Ouse flows through the East of England into The Wash, an ecologically important estuary and wetland area that supports diverse birdlife and aquatic habitats.

Silverstone STW discharges into the River Tove catchment, which drains into the River Great Ouse and ultimately reaches The Wash, a large estuary on the North Sea coast. The Wash supports internationally important populations of waterfowl and wading birds, as well as diverse fish and invertebrate communities. The plant's secondary treatment helps protect these downstream ecosystems from nutrient enrichment and organic pollution.