Wolston STW - Wastewater Treatment Plant Serving Rugby, Warwickshire

Wolston STW is a wastewater treatment plant located near Wolston, a village in the Rugby borough of Warwickshire, England. The facility serves a population of approximately 5,800 people, placing it in the small agglomeration category under UK regulations. As a UK wastewater treatment plant, Wolston STW operates under the Urban Waste Water Treatment (England and Wales) Regulations 1994, which transpose the EU Urban Waste Water Treatment Directive. The plant discharges treated effluent into local watercourses that drain into the River Avon, a major tributary of the River Severn. The Avon flows through Warwickshire and Worcestershire before joining the Severn near Tewkesbury, ultimately reaching the Bristol Channel. This catchment supports diverse aquatic life and is important for regional water quality management.

Wolston STW discharges into the River Avon catchment, which flows through the English Midlands to join the River Severn. The Severn estuary and Bristol Channel are ecologically sensitive areas supporting migratory fish species and estuarine habitats. The plant's location inland, over 50 km from the coast, means its discharge primarily affects freshwater ecosystems before reaching the marine environment.