Glossop STW Wastewater Treatment Plant, High Peak, Derbyshire

Glossop STW is a wastewater treatment plant located on Melandra Road in Woolley, High Peak, Derbyshire, in the East Midlands of England. It serves a population of around 36,048, placing it in the medium agglomeration category under UK regulatory frameworks. However, under the UK's implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC), agglomerations of this size are generally required to provide secondary treatment, with more stringent requirements if discharging to sensitive areas. Treated effluent from the plant is likely discharged into a local watercourse that feeds into the River Etherow or the River Goyt, both part of the Mersey Basin, ultimately draining into the Irish Sea. The plant plays a key role in protecting local water quality and supporting the ecological health of the downstream river system.

The plant discharges into the River Etherow catchment, which flows into the River Goyt and then the River Mersey, eventually reaching the Irish Sea. This watershed supports diverse aquatic life and is important for migratory fish species. The area is characterized by upland peat moorlands and valleys, with sensitive habitats that benefit from effective wastewater treatment.