CATTERICK STW - Secondary Wastewater Treatment Plant in Catterick, North Yorkshire

CATTERICK STW is a municipal wastewater treatment plant located on Oran Lane in Catterick, North Yorkshire, England. The facility serves a population of approximately 2,223 and operates with secondary treatment, which is the standard biological treatment stage required for inland plants under UK regulations. The plant has a designed capacity of 2,556 cubic meters per day and reports a discharge volume of 494.92 cubic meters per day, indicating it operates well below its capacity. As a secondary treatment plant, it removes organic matter and solids through biological processes, meeting the requirements of the Urban Waste Water Treatment Directive (UWWTD) as transposed into UK law. The treated effluent from CATTERICK STW is discharged into local watercourses that ultimately drain into the River Swale, a tributary of the River Ure, which flows into the Humber Estuary and the North Sea. The plant plays a key role in protecting the water quality of the Swale catchment, which supports diverse aquatic life and is used for recreation and agriculture.

CATTERICK STW discharges into the River Swale catchment, which flows into the River Ure, then the Ouse, and finally the Humber Estuary, a major ecological and economic gateway to the North Sea. The Swale supports salmonid fisheries and sensitive aquatic habitats, making effective treatment essential to prevent nutrient enrichment and maintain biodiversity in this rural watershed.