Crowborough STW - Secondary Wastewater Treatment in Wealden, East Sussex

Crowborough STW is a wastewater treatment plant located near Crowborough in Wealden, East Sussex, England. It serves a population of approximately 2,273 and operates under the regulatory framework of the UK Environment Agency, which implements the EU Urban Waste Water Treatment Directive (91/271/EEC) for England and Wales. The plant provides secondary treatment, a standard requirement under the Directive for inland freshwater discharges from agglomerations of this size. Its designed capacity is 2,320 m³/day, with an average daily discharge volume of 506 m³/day, indicating operational headroom. Treated effluent from Crowborough STW is discharged into local streams that feed into the River Medway catchment, ultimately draining into the English Channel. The surrounding area includes the High Weald Area of Outstanding Natural Beauty, supporting diverse aquatic habitats and groundwater resources.

The plant discharges into watercourses within the River Medway basin, which flows into the Thames Estuary and the North Sea. The local watershed includes the High Weald, a landscape of ancient woodland and heathland that supports sensitive chalk streams and groundwater-dependent ecosystems. Downstream waters provide habitat for species such as the European eel and brown trout.