Earby STW - Wastewater Treatment Plant in Pendle, Lancashire, England

Earby STW is a wastewater treatment plant located on Old Lane in Earby, Pendle, Lancashire, England. It serves a population of around 6,600, classifying it as a small to medium agglomeration under UK and EU standards. The plant is situated inland, approximately 50 km from the coast, and its operations are part of the region's water infrastructure managed by the local water authority. As a plant serving fewer than 10,000 people, Earby STW is subject to the Urban Waste Water Treatment Directive (91/271/EEC) as transposed into UK law. This directive requires secondary treatment for discharges to freshwater and estuaries for agglomerations of this size. It is expected to meet the regulatory standards for its population equivalent. The treated effluent from Earby STW is discharged into local watercourses that ultimately drain into the River Aire and then into the North Sea via the Humber Estuary. The plant plays a key role in protecting the water quality of these downstream environments, which support diverse aquatic life and are important for regional ecology.

Earby STW discharges into local streams that feed into the River Aire, which flows through Yorkshire and into the Humber Estuary before reaching the North Sea. The River Aire and its tributaries support a variety of fish species and aquatic invertebrates, and the estuary is a vital habitat for migratory birds. The plant's treatment helps maintain water quality in this ecologically sensitive catchment.