Knighton STW - Advanced Wastewater Treatment Plant in Knighton, Powys, Wales

Knighton STW is an advanced wastewater treatment facility located on Ludlow Road in Milebrook, near Knighton, Powys, Wales. The plant serves a population of around 3,021 residents and has a designed capacity of 3,500 m³/day, with an average discharge volume of 672.58 m³/day. As an advanced treatment plant, Knighton STW provides tertiary-level treatment beyond secondary biological processes, ensuring high-quality effluent. This aligns with the UK's implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires appropriate treatment for sensitive areas and agglomerations of this scale. The treated effluent is discharged into the local catchment, which ultimately drains into the River Teme and then the River Severn, flowing into the Bristol Channel. The plant plays a key role in protecting the water quality of these rivers and the downstream estuarine environment.

Knighton STW discharges into the River Teme catchment, a tributary of the River Severn, which flows into the Bristol Channel. The River Teme supports diverse aquatic life, including salmon and otter populations, and is designated as a Site of Special Scientific Interest (SSSI) for its ecological importance. The advanced treatment helps maintain water quality in this sensitive river system.