Richmond STW - Wastewater Treatment Plant in Catterick Garrison, England

Richmond STW is a wastewater treatment plant located in Catterick Garrison, North Yorkshire, England. It serves a population of around 8,577 people, classifying it as a small to medium agglomeration under UK regulatory frameworks. As a UK wastewater facility, Richmond STW operates under the Water Industry Act 1991 and is subject to the Urban Waste Water Treatment (England and Wales) Regulations 1994, which transpose the EU Urban Waste Water Treatment Directive (91/271/EEC). For agglomerations of this size, secondary treatment is typically required, with tertiary treatment in sensitive areas. The plant discharges treated effluent into the local water environment, likely the River Swale, which flows into the River Ure and eventually the Humber Estuary. This catchment supports diverse aquatic life and is important for regional water quality management.

Richmond STW discharges into the River Swale, a tributary of the River Ure, which joins the River Ouse and flows into the Humber Estuary. The Humber Estuary is a major ecological feature supporting migratory fish, wading birds, and diverse habitats. The plant's discharge must meet strict environmental standards to protect this downstream ecosystem.