COLWALL STW - Secondary Wastewater Treatment Plant in Colwall Stone, Herefordshire

COLWALL STW is a municipal wastewater treatment plant located in Colwall Stone, Herefordshire, England. It serves a small community of approximately 2,254 people, reflecting its role in managing domestic wastewater for this rural village in the Malvern Hills area. The plant provides secondary treatment, which is the standard biological treatment stage required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a designed capacity of 3,000 cubic meters per day, the facility is equipped to handle the local wastewater load. The plant operates within England's regulatory framework, overseen by the Environment Agency, which issues permits under the Water Resources Act 1991. The treated effluent from COLWALL STW discharges into a local watercourse that ultimately drains into the River Severn catchment, one of the UK's major river systems. This catchment supports diverse aquatic habitats and flows into the Severn Estuary, an ecologically important area for migratory fish and bird species. The plant's secondary treatment helps protect water quality in this sensitive environment.

COLWALL STW discharges into a local stream that feeds into the River Severn catchment. The River Severn is the longest river in the UK, flowing through the Severn Estuary into the Bristol Channel. This estuary supports diverse aquatic life, including salmon and eel populations, and is an important migratory corridor. The plant's secondary treatment helps maintain water quality in this ecologically significant watershed.