ALVESTON STW - Secondary Wastewater Treatment in Rudgeway, England

ALVESTON STW is a wastewater treatment plant located in Rudgeway, South Gloucestershire, England. It serves a population of approximately 2,205 people as part of the region's municipal wastewater infrastructure. The plant is situated near the Severn Estuary, a major coastal feature of the West of England. 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 inland agglomerations of this size. The designed capacity is 2,277 m³/day, with a current discharge volume of 490.91 m³/day, indicating operational headroom. As a UK facility, it operates under the Water Industry Act 1991 and is regulated by the Environment Agency. The treated effluent is discharged into the local watercourse, which ultimately drains into the Severn Estuary, a large tidal estuary with significant ecological importance. The estuary supports diverse aquatic life, including migratory fish species, and is part of the broader Severn River Basin. The plant's coastal proximity means its discharge quality is critical for protecting downstream marine and estuarine habitats.

ALVESTON STW discharges into a local watercourse that flows into the Severn Estuary, which then connects to the Bristol Channel and the Atlantic Ocean. The Severn Estuary is a dynamic tidal environment with high biodiversity, supporting fish, birds, and invertebrates. The plant's secondary treatment helps reduce organic pollutants and nutrients, protecting the estuary's ecological balance from eutrophication and other impacts.